This movie is one I saw in a demo reel for the Chiodo Bros Productions and it’s in a dungeon or haunted house setting, one of the monsters is an Elvis ghost (specifically 70’s era Elvis) that has a Beetlejuice/half skeleton look. He pops up in the video from 1:11 onward.
The Amazing Live Sea-Monkeys
https://www.imdb.com/title/tt0103348
Episode 7 – Haunted LIghthouse
https://youtu.be/tS1srXWEng0
The ghost of Elvis appears just before the 20 minute mark.
Thanks
Solved!