Captain Cold max damage anti air... 500.33 for a bar. You can end it with full b2+3+2 into something to OKI for 492.33 damage. But... f** it. pure damage looks way more cool.
Corner madness when Cold has level 2.
First if you catch the opponent with f23, a standard guaranteed unblockable reset into level 2 recharge- only about 600 damage for 1 bar, but you get your level 2 back and like 2/3 of the bar of meter you have spent)
A full on unblockable inescapable reset off F23, 2 bars, level 3 trait, I start with 2 bars, but get to spend 3, because I build almost 2 bars doing the combo)
Optimal midscreen reset with level 2, about 650 damage, 2 bars, but the most important part you build almost full level 2 trait back during the combo and half a bar of meter back, and yeah it is absolutely inescapable by anyone in the cast