Suggestions by @andrewlaposha

Carole King

as Sun in The Masked Singer Season 4 (1974)

Happy Hairston

as Whatchamacallit in The Masked Singer Season 4 (1974)

Isaac Hayes

as Serpent in The Masked Singer Season 4 (1974)

Tina Turner

as Popcorn in The Masked Singer Season 4 (1974)

Vivian Vance

as Lips in The Masked Singer Season 4 (1974)

Danny Thomas

as Squiggly Monster in The Masked Singer Season 4 (1974)

Olivia Newton-John

as Seahorse in The Masked Singer Season 4 (1974)

George Raft

as Gremlin in The Masked Singer Season 4 (1974)

Rudy Vallee

as Broccoli in The Masked Singer Season 4 (1974)

June Carter Cash

as Snow Owl #2 in The Masked Singer Season 4 (1974)

Robert Blake

as Giraffe in The Masked Singer Season 4 (1974)

Billie Jean King

as Jellyfish in The Masked Singer Season 4 (1974)

Redd Foxx

as Dragon in The Masked Singer Season 4 (1974)

Art Donovan

as Baby Alien in The Masked Singer Season 4 (1974)

Charles Nelson Reilly

as Panelist #3 in The Masked Singer Season 4 (1974)

Joyce Brothers

as Panelist #2 in The Masked Singer Season 4 (1974)

Bobby Goldsboro

as Crocodile in The Masked Singer Season 4 (1974)

Smokey Robinson

as Mushroom in The Masked Singer Season 4 (1974)

Johnny Cash

as Snow Owl #1 in The Masked Singer Season 4 (1974)

Rita Coolidge

as Panelist #4 in The Masked Singer Season 4 (1974)