ATM 2026 Acting Company

Michael is a Canadian actor, director, producer and playwright. Michael has performed on national and international stages in iconic roles, including Scar in Disney’s The Lion King (US National Tour). As Managing Artistic Director of SaveTheLaSalle, he is dedicated to restoring the historic LaSalle Theatre in Ontario. He also produces annual shows, including Scrooge: A Christmas Carol and Shakespeare in the Park.

Michael has a passion for preserving theatre history. He also pushes the boundaries of contemporary performance. He brings a bold artistic vision to ATM. He ensures that every production balances tradition, innovation, and inclusivity.

Michael is Associate Artistic Director of ATM. For the company, he has directed The Ferryman’s Toll and Even Unto Death. He also played Theseus/Oberon in A Midsummer Night’s Dream and Prospero in The Tempest.

Dubbed ‘a virtual Nijinsky of performance art’ by the New York Times, Sean has toured North America and Central Europe in the solo play ‘Baby Redboots’ Revenge’, (directed by his wife, Lynne Griffin), winning awards and accolades in Poland, The Czech Republic, New York City, (at P.S. 122, the alternative theatre mecca in NYC), Los Angeles and San Diego.

Sean and Lynne are currently in pre-production on the film adaptation of Sean’s magic reality/horror play The Slaughter Brothers Dime Circus. The theatre production was called ‘a surrealist horror circus mindbender’ by Delirium Magazine, and ‘Part bedtime story, part Clockwork Orange. Half Bugs Bunny, half nightmare’ by BroadwayWorld.

Elsewhere as an actor, Sullivan has appeared in 12 productions at the Tony Award-winning Old Globe Theatre in San Diego, CA. Favorite roles include Norman in The Dresser and Davey/Leon in The Voice of the Prairie, in which he met, acted, and fell in love with Lynne Griffin.

Sullivan’s film credits include Guillermo del Toro’s Frankenstein, Foolproof, Wayne’s World, Back To The Future III, Who’s That Girl?, and The Howling VI. Selected TV credits: The Umbrella Academy (recurring), Damien, Hemlock Grove, Good God, Across The River To Motor City, Poor Tom is Cold.

For ATM, Sean previously played a plethora of roles in Under Milk Wood, and Bottom in A Midsummer Night’s Dream.

Dineta is an accomplished stage and screen performer known for her powerful presence and ability to bring layered, complex women to life. Her career spans dramatic theatre, contemporary works, and original productions, earning her a reputation for both emotional depth and technical precision. A fixture in the Arizona theatre community, she has portrayed roles that demand both fierce conviction and nuanced vulnerability. In Even Unto Death, Williams-Trigg steps into the role of Agnes, a figure of strength and truth-telling whose arrival shifts the course of the Romée household. Offstage, Dineta is a committed advocate for community engagement in the arts, mentoring emerging performers and championing diversity and equity in casting. Her work continues to reflect her belief that theatre is both a mirror and a catalyst—reflecting lived experience while inspiring change.

Debra is a prolific actor whose performances are defined by emotional depth and meticulous craft. She has appeared in leading roles for theatres across the Valley, earning praise for her work in both classical and contemporary repertoire. For Arizona Theatre Matters, she has played Betsy in Pineapple and Other Options, the quintessential Narrator in The Jewish Question, and the “larger-than-life, overdone” Vickie in John Perovich’s Unexpected. Known for her ability to inhabit complex, layered women, Her work consistently reflects a commitment to storytelling that is truthful, resonant, and rooted in empathy.

Joseph  is a Toronto-based actor and artistic creator originally from Northern Ontario. After studying briefly at the University of Windsor’s Drama (BFA) program, he became an artistic associate at The LaSalle Theatre in Kirkland Lake. There he helped to produce junior productions of several major shows including Annie, The Music Man and Willy Wonka. His original adaptation of The Nutcracker showcased his abilities as both a writer and performer.

Maren Maclean (Midnight at the Algorithm & Blues – Linzie)

Maren has performed with the Utah Shakespeare Festival and Birmingham Children’s Theatre, produced for Arizona Actor’s Academy, dramaturg-ed for Nearly Naked Theatre, designed for Phoenix Theatre and Scottsdale Conservatory Theatre, directed for Algonquin Theatre Company, Nevada Shakespeare in the Park, and The Shakespeare Theatre and was the Education Outreach Director for Southwest Shakespeare Company. Favorite roles: Belinda in Noises Off at Phoenix Theatre, Pamela in Fox on the Fairway at Actor’s Theatre and Hilda in Venus Observed at Verse Theatre Manhattan. She is an active member of Arizona’s AEA Member Coalition. She adores special effect makeup, dancing, traveling, movies (buttered popcorn, Junior Mints and all) and is slightly addicted to Law and Order re-runs. She digs New Works and looks forward to honing her directing skills. She’s a teaching artist for Marin Shakespeare Company in their acclaimed Arts in Corrections program. Originally from New York she has made Phoenix home with her husband and their 2 dramatically darling daughters. http://www.marenmaclean.net AOE

Mathew is an actor whose work spans musical, classical, and contemporary stages. Roles include Gyp DeCarlo in Jersey Boys (The Phoenix Theatre Co.); Walt in A Public Reading of an Unproduced Screenplay about the Death of Walt Disney (iTheatre Collaborative); Stone in City of Angels; R.P. McMurphy in One Flew Over the Cuckoo’s Nest. He also played Father in Ragtime. For ATM, he played Alonso/ Stephano in 2024’s The Tempest. Another role was Cloten in Cymbeline (Southwest Shakespeare). He portrayed Victor in The Price (Arizona Jewish Theatre). In Lobby Hero (Actors Theatre, Phoenix), he was Bill. Additionally, he played Reuven in The Chosen (Arizona Jewish Theatre) and Bill Wilson in Bill W. and Dr. Bob (Broadway Palm West); and Harold Hill in The Music Man (TheaterWorks, Peoria). Screen and commercial work includes Fox’s America’s Most Wanted, national/regional campaigns for Hershey’s, Skipper’s, and Boyd’s Coffee, and narration/industrials for Boeing’s Office Safety series and Microsoft.

Gary has been a toiler in the regional theatre vineyards since 1984. His acting and directing credits include over 60 productions in 15 years as an Associate Artist at the Foothill Theatre Company, as well as productions at Palo Alto Childrens’ Theatre, Capital Stage, California Stage, Sacramento Theatre Company, Music Circus, B Street Theatre, Fantasy Theatre, Americana Theatre Company, Shakespeare Santa Cruz, the Oregon, Colorado, and Lake Tahoe Shakespeare Festivals, and a bilingual production of Noises Off at the Maxim Gorky Drama Theatre in Vladivostok.

Playwriting commissions include several plays written for Foothill Theatre Company while on staff there: The Diary of a Forty-Niner, Dracula, and Evermore, along with several one-acts. Other commissions: Of Kites and Kings (for Sacramento Theatre Company); and One Grain of Rice, and Meerkats: The Musical! (for Palo Alto Childrens’ Theatre). Also for Palo Alto Childrens’ Theatre, Gary is currently working on a new Robin Hood script. Another recent script, Play It Straight, co-written with Richard Winters and Kerri Yund, has had several staged readings and full productions in Northern California, and is currently enjoying an extended rehearsal process at The Actors’ Workshop in Muskegon, Michigan, slated for production in the Spring of 2026.

Earlier this year, Gary threw in as a contributing playwright for Arizona Theatre Matters’ The Ferryman’s Toll, in which he also played Dr. Clark.

Kiley is a dynamic performer whose work combines raw emotional honesty with an instinct for detail. She has appeared in a range of productions spanning classical texts, contemporary plays, and devised theatre, earning recognition for her versatility and stage presence. With a background that includes such diverse roles as Kira in Xanadu, Helena in A Midsummer Night’s Dream and Babe in Crimes of the Heart, Bishop approaches each role with a deep commitment to character development and storytelling. Bishop brings subtlety, empathy, and a lived-in realism to her performances, creating characters that resonate long after the final line is spoken. She continues to build a career marked by bold role choices and a dedication to inclusive, collaborative theatre-making.

Hilary is a graduate of George Brown’s Theatre Conservatory, and co-founder of the Highland Arts Theatre in Sydney, Nova Scotia.

Favourite credits include: Kat Sandler’s PUNCH UP (Eastern Front Theatre), Heart of Steel (Factory Theatre), Matilda (The Savoy), Yaga (The HAT), for TV: Odd Squad (TVOKids), and Frankie Drake Mysteries (CBC). In addition, she operates out of Toronto as the HAT’s Lead Graphic Designer. You can peek her artworks @hilhob on instagram!

EC is an actor, playwright, and director working in the Valley for over a decade. He proudly serves as Marketing Director for Ronin Theatre Collaborative. Recent roles include Horatio in A Klingon Hamlet and Nick Bottom in Something Rotten at Desert Stages. When not running Ronin’s social media machine, EC can be found performing across the Valley. Follow his work at ECDarlingBond.com.

Donald Young (Midnight at the Algorithm & Blues – Boone) Donald Young is a Zoni Award–nominated actor whose recent work includes Puffs at Starlight Theatre (2024). A former member of Arizona State University’s improv and sketch comedy teams (2012–2013), he brings sharp comedic timing and grounded presence to the stage. His love of theatre began with Arsenic and Old Lace in 2004

MKM Riddell is a New Mexico-based actor and director. She directed Jeanmarie Simpson’s solo piece, Heretic – the Mary Dyer story in 2011. Previously, she worked with adults with disabilities, which is where she and Jeanmarie first connected. MK has a lifetime of theatre credits including undergraduate, graduate, and post-graduate studies in theatre. In addition to being a theatre artist, MK is a prolific and celebrated visual artist.

Lynne‘s acting credits span over forty years, appearing in theatres across Canada and the U.S. including the Shaw and Stratford Festivals (which included playing opposite both Sir Peter Ustinov in King Lear and Sir Ian Richardson in Man and Superman).

At Theatre Plus in Toronto, Lynne did the trifecta of playing the leads in The Lark, A Doll’s House, and Antigone, all directed by Marion Andre. Lynne appeared in 12 productions at the Old Globe Theatre in San Diego, CA, including The Voice of the Prairie where she met her future husband, Sean Sullivan.

Her favorite role remains The Nurse in Romeo and Juliet, which she has played four times… and the first time was the first meeting of Lynne and Jeanmarie, who played Lady Capulet.

M. John is the Head of Acting at the Randolph College for the Performing Arts in Toronto. He is a frequent collaborator at 4th Line Theatre (Wild Irish Geese, The Tilco Strike, The Great Shadow) and New Stages (It’s A Wonderful Life: A Live Radio Play & Yellow Face. Other recent theatre credits include Venus in Fur (Pickle Theatre); Tunnel at the End of the Light (Soldiers in the Arts); Give ‘Em Hell (Prairie Fire, Please / Theatre Direct); ; A Christmas Carol Comedy (No Porpoise); A Number (Lunar Stage); Macbeth, Hamlet & Romeo and Juliet (Classical Theatre Project); The 39 Steps (Gin Soak’d); The Hound of the Baskervilles & End of the Rainbow (Globus); Krampus, The Princess Knight and Treasure Island* (Solar Stage).

M. John is currently touring his one-person Robert Munsch show(s) Fireside Munsch**.  

*Dora Mavor Moore Award nomination(s) for Outstanding Performance by an Individual.

**Eight Dora Mavor Moore Award nominations.

Recent television credits include: Noel Next Door (Hallmark); Bury the Past (Lifetime); Mrs. America & The Strain (FX); 11/22/63 (Hulu); Murdoch Mysteries & Ollie the Boy Who Became What He Ate (CBC). 

Audiobooks include: Tell Me When You Feel Something, Escape Plans and The Colonial Hotel.

As a creator and performer, Matthew works in theatre, dance, and with orchestral ensembles across the continent. He also works in film/tv, voice, prosthetics, and motion capture. Most recently, he has been seen at the Canadian Opera Company in Donizetti’s Don Pasquale. He has also appeared in two new short films. Additionally, he was featured hugging his graduating daughter in a Jewlr ad.

He has been nominated for and won several awards (nominations for 6 Dora Mavor Moore Awards in total). He has also been nominated for the Total Theatre Award at the Edinburgh Fringe. This was for Pittsburgh New Music Ensemble’s interdisciplinary “theatre of music” work Just Out of Reach. He was nominated for the CTC Award in Vancouver, winning best production for Ghostlight Projects’ The Boys in the Band. Additionally, he has been nominated for the KM Hunter Award.

Notable productions, in addition to Don Pasquale, include starring as Sergio in Expandido Theatre Group’s The Rage of Narcissus. He starred as Michael in The Boys in the Band (Ghostlight Projects). He also starred as Peter in Peter and the Wolf (Theatre Rusticle). He also co-created and performed in Gorey Story, and the solo work Waiting for the Dawn (The Thistle Project). Other works include Sunyata with Kokoro Dance. He directed 10 Nights of Dream (TomoeArts), Unity (1918), The Government Inspector, Peer Gyn and Arcadia (Randolph College Toronto). Matthew also played Albert in the creature feature Silent Retreat. It won the Best Canadian Feature in the Toronto After Dark Film Festival. The film is available on Amazon Prime.

Matthew’s main hope is to create and contribute to works that are meaningful. He wants to help people understand themselves and the world in a fuller way. He aims for a more nuanced and compassionate understanding.

Carolyn’s acting credits include appearances at Lake Tahoe Shakespeare Festival, Sierra Shakespeare Festival, B Street Theatre, Sacramento Theatre Company, Jewish Theatre of San Francisco, and the Maxim Gorky Drama Theatre in Vladivostok.  Directing credits include multiple productions at Foothill Theatre Company, Perseverance Theatre (Juneau, AK), Orlando Shakespeare Theatre, Colorado Shakespeare Festival, and Utah Shakespeare Festival.  She recently helmed an independent production of the solo play, Barrymore’s Ghost, in Sedona, AZ, and will return to Utah Shakespeare Festival this summer to direct Troilus and Cressida.  Her teaching credits include stints at University of Alabama, University of South Carolina, UC Davis, Sierra College, and Nevada Union High School.  She holds a BFA from BYU, and a MFA from UC Davis, and is a proud member of two theatrical unions:  the Stage Directors and Choreographers Society, and Actors Equity Association.