Super-Trope to Holding Back Backfire. May be caused by Internalized Categorism. May lead to a "No More Holding Back" Speech or to the discovery that I Am Not Left-Handed when the crossing of the Godzilla Threshold means it's time to get dangerous and show their true power. Rarely (if ever) leads to Always Need What You Gave Up, because when they choose to limit their powers for mundane reasons, they can just make an exception, and in cases where their reasons are more dire, well, losing the fight is better than blowing up Main Street. Despite similarities, not likely to overlap with Just Toying with Them, as characters doing that don't care too much about playing fair and maintaining their self-imposed limitations. In video games, compare Cherry Tapping.