My main is my namesake, an Ice Blast / Cold Domination Corruptor. I've got three builds, solo, team, and PvP. My solo build is set up for being able to solo anything that is 'soloable' (that's a word, right?). I've taken down every AV, GM, and EB in the game solo with that build, including pre- and post-nerf RV AVs. I've collected over 1,500 badges on it and ran every Hero, Villain, Praetorian, Rogue, and Vigilante story arc in the game. The team build is for MSRs, Hamis, and Incarnates content, which I rarely run anymore. Lots of solid buffs and debuffs coming from Cold Domination 🥶 👌. Last build is for PvP, but since debuffs aren't as good as they used to be, and slows are a joke, it's not much more than an annoyance in competitive settings.
So, the reason this character is fun to play is because of the creative costumes and back story I made for him. A cross between Raiden and Sub Zero from Mortal Kombat. The builds I mentioned are also super versatile.
When Bitter Freeze Ray, slotted with 4 damage procs is cast after Build Up and Scourge active, it is a tremendous amount of damage. Love that part!