Oh how I love the “First Appearance Iron Man”, which is how he looked in his first comic appearance (Tales of Suspense #39 – March 1963), as well as in the 2008 Iron Man movie. That scene where he’s busting out of a cave using an armour that he built IN A CAVE (WITH A BOX OF SCRAPS!) is definitely the defining moment of the Iron Man story in which Tony Stark learns that with great power there must also come great responsibility (or something like that…)
X-23 is a character that was created for the X-Men Evolution animated series on Kids WB. Not a bad show, but nowhere as good as the 90s X-Men animated series (which is the only X-Men cartoon to watch, really).