Girl with the staff (although this is not a nickname, that is what I called celeste when talking to my friend who was not used to the character names yet)
BigDaddyCat
SmallBabyCat
Singo( Six guns + Ringo)
WeeboAssassin(Taka)
I don’t have any dedicated nicknames for any hero, but whenever I have to support for an exceptionally crappy carry, I get cranky and add the suffix/prefix “trash” to their hero.
Trashjaw
Trashmuel
Trashgo
Trashgrace
They aren’t really creative, but they get the point across.
Kensei: Cansei, Cancer
Ozo: Bozo, Jojozo, Opzo
Krul: Edge
Samuel: Eddge
Tony: Star Platinum
Epic Talent Ardan: Mike Tyson, One Punch Man, The World(because his ult is cc, just like Dio’s stand, and also because Tony already has a jojo reference), Jawbreaker, Deleter, Nuker(Because I use “nuke” as a metaphor for taking a shit ton of damage, even if the damage isn’t aoe or only affects a single person)
Baron: Tzar Bomba, Tzar Baron
Joule: BFG, Death Star, Jageru(a nickname for a heavy hitting tank destroyer in World of Tanks)
Ringo: Rango
Koshka: Neko
Glave: Furry bara
Phinn: Scalie bara, Tank
Legendary talent Phinn: Heavy tank, Stealth tank, Regenerador(A monster from Resident Evil 4)
Skye: Katusha