The 3 C.H.E.R.U.B.S, Cletus, Collin, and Keenie can't go back into heaven because they killed an innocent old man, Lyle Lipton and the IMP saw it, and now the 3 C.H.E.R.U.B.S can only access the human world (In Helluva Boss) and hell

Blitzø: Looks like you did our job for us

Moxxie: YAH

Millie: YAH