SLAVE OF THE SCREAMER (PART 1)

This bizarre, but fondly remembered by some, strip ran in Valiant, starting in May 1970. Written by Tom Tully and illustrated by the wonderful Jesus Blasco. 
Skydiver Tony Steel is the unwitting guinea pig in an experiment by creepy lab assistant Mervin Small who has living cells in dust from the planet Monthro. Believing the Monthro inhabitants to be far superior beings he implants some cells into Steel, but the results are not, unsurprisingly, what he expected...

From Valiant #399, here's the first chapter...