HOTW- Proty and Proty II

From Wiki- Proty is the name of two characters appearing in media published by DC Comics, primarily in association with the Legion of Super-Heroes. The original Proty first appears in Adventure Comics #308 (May 1963), where Chameleon Boy adopts him as a pet.  After Proty sacrifices himself to resurrect Lightning Lad, an identically-named Protean, dubbed "Proty II", is introduced as his successor.  Proty's species, the Proteans, are white, spherical aliens from a planet in the Antares system. The alien Llorn colonize the planet, but are forced to leave following a series of natural disasters caused by sunspots. They use a special ray to rapidly evolve the Proteans, giving them shapeshifting abilities and enabling them to survive in various environments.^[1] Both incarnations of Proty are protoplasmic beings who can shapeshift and possess low-level telepathic abilities. Additionally, they are resistant to extreme temperatures and can survive in the vacuum of space.  Back to me:

I met Proty early on, with him being "The Weirdo Legionnaire" invented to take on Computo.  He is about the only blob thing I like.  It sure helps that he doesn't ingest people and flesh for food.  Chameleon Boy does say he was getting chunky, so the Proteans must eat something.  I miss fun creatures in comic books.