If I were a hero, I'd be Martin Luthor (Part 1313)....

Superhero Anydays

In the mid-70s, artist Mike Grell took over the Legion Of Super-Heroes comic book's drawing duties.  He revamped a whole bunch of the team's costumes and totally revitalized the comic itself.  Here are some of his renditions: 

Duo Damsel

Element Lad

The three members who died, back to front, Invisible Kid I, Ferro Lad, Chemical King.

Invisible Kid II (who was not a member when he was on the book)

Mon-El

Night Girl (never a member of the Legion itself, long time member of the Legion Of Substitute Heroes, and Cosmic Boy's girlfriend)

Phantom Girl

Polar Boy (only became a member after Grell was gone from the book)

The Legion of Substitute Heroes (Night Girl, Stone Boy, Chlorophyll Kid, Polar Boy, Porcupine Pete, Fire Lad, Infectious Lass, Color Kid)

Ultra Boy

POLT