Suggestions by @vadim_havard

Elena Satine

as Lorelei in Thor

Alex Livinalli

as Attuma in Thor

Salma Hayek

as Ajak in Thor

Salma Hayek

as Ajak in Thor

Richard Madden

as Ikaris in Thor

Benicio del Toro

as Collector in Thor

F. Murray Abraham

as Khonshu in Thor

LOKI ALLIGATOR

as Alligator Loki in Thor

Jesse Burch

as Black Dwarf in Thor

Patton Oswalt

as Pip the troll in Thor

Rachel House

as Topaz in Thor

Stephen Blackeheart

as Brahl in Thor

Chris Hemsworth

as Throg in Thor

Sacha Baron Cohen

as Mephisto in Thor

Brett Goldstein

as Hercules in Thor

Saffron Burrows

as Victoria Hand in Thor

Kurt Russell

as Ego in Thor

Kurt Russell

as Ego-Prime in Thor

Jonathan Majors

as He Who Remains in Thor

Dweller-in-Darkness

as Dweller in Darkness in Thor