<Ul> <Li> Melissa McCarthy as Deanna `` Dee Rock '' Miles ( née Cook ) </Li> <Li> Molly Gordon as Maddie Miles , Dan and Deanna 's daughter </Li> <Li> Gillian Jacobs as Helen , a sorority sister who is older than the rest due to having been in a coma for eight years . </Li> <Li> Maya Rudolph as Christine Davenport , Deanna 's neurotic and heavy drinking best friend </Li> <Li> Jessie Ennis as Debbie , a sorority sister with `` issues '' </Li> <Li> Adria Arjona as Amanda , another sorority sister with `` issues '' </Li> <Li> Matt Walsh as Daniel `` Dan '' Miles , Deanna 's ex-husband , Maddie 's father </Li> <Li> Julie Bowen as Marcie Strong , a real estate agent , Deanna 's nemesis and Dan 's lover </Li> <Li> Debby Ryan as Jennifer , a `` mean girl '' in Deanna 's archaeology class </Li> <Li> Stephen Root as Michael `` Mike '' Cook , Deanna 's father and Maddie 's grandfather </Li> <Li> Jacki Weaver as Sandy Cook , Deanna 's mother and Maddie 's grandmother </Li> <Li> Luke Benward as Jack Strong , a frat boy infatuated with Deanna </Li> <Li> Jimmy O. Yang as Tyler , Maddie 's boyfriend and Jack 's friend </Li> <Li> Chris Parnell as Wayne Truzack , Deanna 's professor </Li> <Li> Heidi Gardner as Leonor , Deanna 's reclusive Goth roommate </Li> <Li> Yani Smone as Trina , Jennifer 's snarky sidekick </Li> <Li> Damon Jones as Frank Davenport , Christine 's husband </Li> <Li> Ben Falcone as Dale , the Uber driver </Li> <Li> Nat Faxon as Lance </Li> <Li> Sarah Baker as Gildred </Li> <Li> Karen Maruyama as Mediator </Li> <Li> Steve Mallory as Bill </Li> <Li> Courtney Patterson as Amy </Li> <Li> Steve Falcone ( Ben Falcone 's real - life father ) as Older Man # 1 / Vince </Li> <Li> Michael D. McCarthy ( Melissa McCarthy 's real - life father ) as Older Man # 2 / Dennis </Li> <Li> Christina Aguilera as herself ( cameo ) </Li> </Ul>
<Ul> <Li> Melissa McCarthy as Deanna `` Dee Rock '' Miles ( née Cook ) </Li> <Li> Molly Gordon as Maddie Miles , Dan and Deanna 's daughter </Li> <Li> Gillian Jacobs as Helen , a sorority sister who is older than the rest due to having been in a coma for eight years . </Li> <Li> Maya Rudolph as Christine Davenport , Deanna 's neurotic and heavy drinking best friend </Li> <Li> Jessie Ennis as Debbie , a sorority sister with `` issues '' </Li> <Li> Adria Arjona as Amanda , another sorority sister with `` issues '' </Li> <Li> Matt Walsh as Daniel `` Dan '' Miles , Deanna 's ex-husband , Maddie 's father </Li> <Li> Julie Bowen as Marcie Strong , a real estate agent , Deanna 's nemesis and Dan 's lover </Li> <Li> Debby Ryan as Jennifer , a `` mean girl '' in Deanna 's archaeology class </Li> <Li> Stephen Root as Michael `` Mike '' Cook , Deanna 's father and Maddie 's grandfather </Li> <Li> Jacki Weaver as Sandy Cook , Deanna 's mother and Maddie 's grandmother </Li> <Li> Luke Benward as Jack Strong , a frat boy infatuated with Deanna </Li> <Li> Jimmy O. Yang as Tyler , Maddie 's boyfriend and Jack 's friend </Li> <Li> Chris Parnell as Wayne Truzack , Deanna 's professor </Li> <Li> Heidi Gardner as Leonor , Deanna 's reclusive Goth roommate </Li> <Li> Yani Smone as Trina , Jennifer 's snarky sidekick </Li> <Li> Damon Jones as Frank Davenport , Christine 's husband </Li> <Li> Ben Falcone as Dale , the Uber driver </Li> <Li> Nat Faxon as Lance </Li> <Li> Sarah Baker as Gildred </Li> <Li> Karen Maruyama as Mediator </Li> <Li> Steve Mallory as Bill </Li> <Li> Courtney Patterson as Amy </Li> <Li> Steve Falcone ( Ben Falcone 's real - life father ) as Older Man # 1 / Vince </Li> <Li> Michael D. McCarthy ( Melissa McCarthy 's real - life father ) as Older Man # 2 / Dennis </Li> <Li> Christina Aguilera as herself ( cameo ) </Li> </Ul>
who plays the dad on life of the party
who plays the dad on life of the party
Matt Walsh
Matt Walsh