Bill Stahl

Bill stahl

Bill Stahl is a San Francisco based improviser most known for his work in the group 'The Five Deadly Improvisers' which performs fully improvised classic Kung Fu movies. Bill has been a guest with Unscripted Theater in San Francisco and was a guest with 'BATS Improv' at Fort Mason in SF for the 2012/2013 season. He has produced a variety of improv shows in San Francisco, including Improvised Western and Crimes of the City.

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Regina Saisi is a San Francisco-based actor and improviser where she has performed and taught for the past 30 years. A pioneer in the development of long-form improv, she is a founding member of the improvisational theatre companies True Fiction Magazine, Pulp Playhouse and Improv Playhouse of San Francisco, and is a Company member of BATS Improv.  Regina has taught and performed at the San Francisco Conservatory of Music, ACT, Stanford University and across the country, as well as internationally in Amsterdam, Helsinki, Florence, Stockholm, London, Beirut, Leuven, Berlin, Paris and Jeddah. She is currently the Dean at the BATS Improv school where she also served as Artistic Director. 

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Tim has improvised since 1988 with many San Francisco-based groups, including BATS Improv,True Fiction Magazine, Awkward Dinner Party, and with the acclaimed troupe 3 For All.   In 2009, he founded Improv Playhouse of San Francisco.  Tim has also appeared in numerous plays in the San Francisco Bay Area, and received critical acclaim for his leading roles in the improvised feature films, Suckerfish and Security.  With Stephen Kearin, Tim co-wrote, and originated the role of Dirk Manly in, An Evening with Dirk & Blaine.  Tim has performed and taught improvisation at the American Conservatory Theatre, BATS Improv, Stanford University, and many other venues nationally (Los Angeles, Chicago, New York, Austin, Louisville, Atlanta, etc.) and internationally (Amsterdam, Barcelona, Beirut, Belgium, Berlin, Bucharest, Hamburg, Helsinki,  Lisbon, London, Mallorca, Oslo, Paris,  Saudi Arabia, Stockholm, and Tel Aviv). He has served many times as the Director of various BATS Improv Long-Form Intensives.



Toni grew up in Chicago where she began her improv studies with Second City and performed her first student show on the SC main stage.  Since then she has studied with BATS Improv, ACT in San Francisco, and with many coaches.  Currently she performs with Secret Improv Society at the Shelton Theatre.  She has also performed with Big City Improv, several BATS student groups, Improvised 80’s Teen Movie, A Improvised Murder Mystery, at the San Francisco Improv Fest and with a variety of other improv groups.  She is a founding member of the improv groups Go Fish and Mi Corazon es tu Piñata: Improvised Telenovela -- in English.  




David lives life in suspension of disbelief. He is a member of the performing ensemble at Un-Scripted Theater Company and, since 2013, has appeared in over a hundred improvised plays and musicals. David trained and performed at BATS Improv, and as 33.3% of Improv Lab, has appeared in the San Francisco, Austin Out of Bounds, and San Diego Improv Festivals, and in SF Sketchfest 2017.

REBECCA poretsky

Bio coming soon.

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Win’s composing credits include “Grounds” (2016 Louisville International Film Festival), “Random Acts of Comedy” (David Alan Grier - 65 episodes), and additional music for “How to Go Out on a Date in Queens” (Jason Alexander, Ron Perlman). He has songs in 12 films, including “Dead Man's Curve” (Dana Delany, Keri Russell), “Spreading Ground” (Dennis Hopper), and “I Shot a Man in Vegas” (John Stockwell). His improvisation credits include The Groundling Theater, BATS Improv, and 3 For All. Win is the piano player at the end of the British Version of “Whose Line Is It Anyway”. 


Drew Merit is a performer, illustrator, and teaching artist. He's the co-founder and an original cast-member of Secret Improv Society, now in it's 7th year (winner of SF Magazine's Best Comedy in 2016). Drew's credits include numerous performances at BATS Improv, Big City Improv, The Reactors, and 5-speed Overdrive. Drew has improvised as a lightician at BATS Improv, Secret Improv Society, Big City Improv and 3 for All. Drew currently works as a live illustrator, animator and he teaches improvisation in San Rafael at Improv Marin.


stefan wenger

Bio coming soon.


Susie discovered and fell in love with improv 20 years ago and enjoys sharing her passion through training, teaching and performing. She is an ensemble member of Un-Scripted Theater and loves surprising the audience and creating rich and diverse characters. 

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Dave Dennison developed the improv format Family Drama at BATS Improv, and for more than ten years it’s been an audience and player favorite. He has performed with many groups including True Fiction Magazine, Scratch Theater, Start Trekkin’, the Particulars, Hey You, the Travelers, and Secret Improv Society. From 2005 to 2008, he served as Artistic Director of BATS Improv. In addition to teaching and serving as the dean at BATS, Dave has taught at the Marsh, Stanford University, and the California College of the Arts, as well as for numerous corporate clients. Dave is currently working on “The Method of the Moment”: a new approach to improv that focuses on rigorous attention to the basics.



Basel Al-Naffouri began his theater journey at MIT where he took his first acting classes. After moving to the Bay Area, he was introduced to improv by taking his first class at BATS in 2005. Soon after, Basel was invited to perform with the BATS Sunday Players and was a founding member of Double Entendre and Out of Line. He has also produced, directed and acted in “Improvised Arabian Nights”, an improvised show in the style of “A Thousand and One Nights”. Basel has taught improv workshops both locally and internationally and has led trainings with organizations such as Google and Aswat, various improv troupes and internationally at KAUST University in Saudi Arabia and Laban in Lebanon.