A powergaming character has no personality. He is a killing machine. 18 STR 18 Con, 3 everything else. Only trains skills useful in combat, mocks others for training in other areas.
This is a quote from a powergamer in a game I was running. "I'm not here to roleplay, I'm here to roll dice!"
Making a robot is a mechanical issue. It totally interacts with roleplay and storytelling.Powergaming is a mechanical issue, and does not directly interact with roleplaying/storytelling.