Suggestions by @aaronpirelatinedo

Jonah Hill

as Henchmen 21 in The Venture Bros

Christopher McCulloch

as Henchmen 24 in The Venture Bros

Doc Hammer

as Dr. Girlfriend in The Venture Bros

Paul Rudd

as The Monarch in The Venture Bros

Paul Rugg

as The Monarch in The Venture Bros

Asher Angel

as Hank Venture in The Venture Bros

Owen Vaccaro

as Dean Venture in The Venture Bros

John Cena

as Brock Sampson in The Venture Bros

Bill Hader

as Dr. Thaddeus Venture in The Venture Bros

Ti West

as Director in Hazbin Hotel

The Venture Bros.

as Next Project in Hazbin Hotel

Zendaya

as I.M.P. in Hazbin Hotel

Loona (Helluva Boss)

as I.M.P. in Hazbin Hotel

Mia Goth

as I.M.P. in Hazbin Hotel

Millie Knolastname

as I.M.P. in Hazbin Hotel

Jack Quaid

as I.M.P. in Hazbin Hotel

Moxxie Knolastname

as I.M.P. in Hazbin Hotel

Brandon Rogers

as I.M.P. in Hazbin Hotel

Blitzo (Helluva Boss)

as I.M.P. in Hazbin Hotel

Spoiler

as I.M.P. in Hazbin Hotel