Mary Sue protagonist; overpowered self-insert character
Internet slang for a protagonist who is inexplicably strong or capable, often seen as a wish-fulfillment character. Used in discussions of fiction, especially light novels and web novels.
The protagonist of this light novel is totally a Mary Sue, isn't he?
overpowering weaker opponents for self-satisfaction; bullying low-level players
Internet slang for the act of using overwhelming power to defeat much weaker opponents in a video game, often for personal enjoyment rather than fair competition.
Hunting beginners is just overpowering weaker players for self-satisfaction.