UniOmni
Outrageously Dickish
Leo, if you wanna see what i believe Solaris was largely based on, check out the Marvel Britain supervillain The Fury.
Adapts to any attack, and becomes immune to it i believe.
But like companies do whenever they borrow from each other, they take what they like and then multiply it by a huge margin.
Like Hulk was based on Grundy, but has proven to be stronger than Grundy with an insane healing factor and ever increasing durability and strength.
And in turn, how DD was based largely it seems on Hulk, but took his healing factor and added defensive (originally) healing , which has now become offensive healing.
Solaris is in turn similar to The Fury, with its patented adapt and immunity to any attack it suffered before.