The Amazing Spider-Man #208 (1980)

“Fusion!”

Rating: 3/5

Writer: Denny O’Neil
Artist: John Romita Jr.

A guy working on a particle accelerator messes something up and causes him and his twin to fuse together into one glowing being. They can absorb energy from anything they touch. They head for the nuclear power plant to get more energy. Spider-Man catches up with them and stops them.