A.P. Bio Happiness (Season 2, Episode 1)
TV-PG
TV Episode | 21 min | Comedy

A.P. Bio

Happiness (Season 2, Episode 1)

TV-PG

TV Episode | 21 min | Comedy

Jack tries to unlock the secret of what makes ordinary people happy, leading him to a new book idea that he believes will be his ticket out of Whitlock High and Toledo; Mary, Stef and Michelle celebrate a special day.

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Cast	+ Add Cast
20 cast members

Name	Known for
Glenn Howerton Jack Griffin Jack Griffin See fewer	It's Always Sunny in Philadelphia (2005)
Lyric Lewis Stef Duncan Stef Duncan See fewer	Waffles + Mochi (2021)
Mary Sohn Mary Wagner Mary Wagner See fewer	The Boss (2016)
Jean Villepique Michelle Jones Michelle Jones See fewer	I Love You, Man (2009)
Paula Pell Helen Henry Demarcus Helen Henry Demarcus See fewer	Saturday Night Live (1975)
Patton Oswalt Principal Ralph Durbin Principal Ralph Durbin See fewer	Young Adult (2011)
John Pirruccello Principal Kling Principal Kling See fewer	The Lincoln Lawyer (2022)
Aparna Brielle Sarika Sarika See fewer	FUBAR (2023)
Nick Peine Marcus Marcus See fewer	A.P. Bio (2018)
Allisyn Snyder Heather (as Allisyn Ashley Arm) Heather (as Allisyn Ashley Arm) See fewer	Astrid Clover (2014)
Eddie Leavy Anthony Anthony See fewer	A.P. Bio (2018)
Sari Arambulo Grace Grace See fewer	A.P. Bio (2018)
Jacob Houston Victor Victor See fewer	Yellowjackets (2021)
Ike Chloe (as Aiesha Eser) Chloe (as Aiesha Eser) See fewer	Boutique Talent (2020)
Marisa Baram Marissa Marissa See fewer	A.P. Bio (2018)
Miguel Lee Eduardo (as Miguel Chavez) Eduardo (as Miguel Chavez) See fewer	A.P. Bio (2018)
Jacob Timothy Manown Caleb Caleb See fewer	Walk of Shame (2014)
Hans Holsen Ron Ron See fewer	Let's Go to Prison (2006)
Clint Culp Constrution Worker Constrution Worker See fewer	Killing It (2022)
Freedom Bridgewater Repairman Repairman See fewer	Deja Vu (2006)