Suggestions by @ricultima

Jerry Seinfeld

as Whimsalot in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Tom Kenny

as Woshua in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Vinny Pizzapasta

as Froggit in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Courtney Miller

as Dogaressa in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Shayne Topp

as Dogamy in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Mike Shinoda

as Dogamy in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Emily Armstrong

as Dogaressa in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Brian Drummond

as Vegetoid in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Craig Ferguson

as Gerson in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Tom Hardy

as W.D Gaster in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Thom Yorke

as Napstablook in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Tara Strong

as Frisk in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Gordon Ramsay

as Grillby in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Tom Kenny

as Monster Kid in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Dan Avidan

as Flowey in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Joel Varg Johansson

as Papyrus in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Dan Avidan

as Asriel in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie

Dan Avidan

as Omega Flowey in UNDERTALE - THE MOVIE - a "harry potter-ish" fantasy movie