League of Legends: Singed and Olaf. Now I can zone top all day long.
Tales of Vesperia: Karol easy.
Ninety Nine Nights: Klarran even though this was a few years ago.
Borderlands 1/2: Both Sirens (Lilith and Maya). Both have specials that look weak and yet, they're actually overpowered as shit (seriously, if Zer0's special didn't have a 15 second cooldown and was more like 30+, Maya would be the only broken character in Borderlands 2). Took me a while to get used to them and figuring out how to build (Lilith builds mostly Elementalist while Maya needs Harmony until Life Sap and then Cataclysm).
Final Fantasy V: Blue Mage job. 'nough said.