Plasmius Vlad Plasmius
and Phantom Danny Phantom
first round:each character at the end of their series, danny has no ice power or ghostly wail, chase has no energy blast or reality warping (when omi was his cat he was able to use energy blast and some sort of reality warping, not like wuyas but good enough to turn the earth into chaos) or elemental transmutation, omi is evil robin is slade's aprentice, no prep
second round: they're full power, one week of prep, they know each other's powers, robin is still slade's aprentice.
they're in character, victory by death or k.o., chase and omi have no shen gong wu since chase don't like to use them in battle