Real world physics on...FULL POWER!!
Lets pretend for a moment that comics HAD to obey the laws of physics as we currently know them (no physical object being able to attain light speed for example)...
Who is the most powerful character in comics (Marvel or DC) that could actually exist under these conditions?
Characters like Doom, Richards, and Lex are disqualified due to magic use and unrealistic super science; the same would apply for any character that has powers/abilities/standard tech that violate any law of physics as we currently know them...
Who is the most powerful character that could actually exist under these conditions?