toxic player

Related
  • grieferMalicious online game disruptor
  • trollDeliberate online antagonist
  • rageIntense, violent anger
  • saltyTasting of brine
  • flamerOnline provocateur or instigator

feeder · thrower · report · mute · ban · chat · abuse · tilted · harassment · sweaty · tryhard · camping · spawn · noob · screaming · mic · lobby · ranked

Opposites
behavioral disposition in gaming/competitive contexts

toxic playergood sport

Person accepting outcomes cheerfully

team player · mentor · casual player · shot-caller · lurker

community impact

toxic playercommunity builder

One who strengthens social bonds

ambassador · mentor · pillar of the community · peacemaker · good example

emotional effect on teammates

toxic playerray of sunshine

Incurably upbeat person

hype man · cheerleader

Familiarity
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