Undertale/The Lego Movie (2014)

Frisk as Emmet

Asriel as Wyldstyle

Toriel as Batman ( Not sorry X) )

Asgore as Vitrivius

Alphys as Benny

Undyne as Metalbeard

Mettaton as Unikitty

Mettaton NEO as Angry Kitty (I couldn't resist.)

Flowey as Good Cop/Bad Cop (I don't care if he and Asriel are the same person. Here they are separate.)

Chara as President/Lord Business