The Return Of Doctor Mysterio was one way to have party balance in a Doctor Who group...
So, alien artefact as cause for superhero, inspired by superhero fandom. (John Byrne’s Superman is shown, sadly not a story illustrated by Dave Gibbons.)
Setting up the brain people as recurring enemies after an embarrassing defeat? Not sure that works.
I think all the X-ray vision jokes should have paid off with it actually being useful.