You are the Sulking Prankster
A cute troublemaker who preps pranks from behind someone bigger.
What kind of villain
Your 'evil' is really just hurt feelings. One time you got burned lingers in your heart, so you improvise little traps to inconvenience the one who did it. But the scale stops at the person right in front of you — no thought of toppling the world. Enjoying petty revenge in the shade of someone dependable, you're less a villain than a sulking kid. The kind of not-quite-hateable rascal who rigs a paint can over a doorway.
In everyday life
When someone talks over you in a group chat, you don't push back on the spot. Instead you replay the moment in your head all evening. The next day you 'accidentally' forget one small favour they asked for, and only once you've caught their flustered look out of the corner of your eye does the knot in your chest loosen a little. Open confrontation isn't your style — but letting it slide as if nothing happened stings a bit too much.
Similar characters
the Home Alone burglars, Tom from Tom & Jerry.
Advice
The hurt you feel is really tender proof that you haven't given up on this relationship yet. If you truly didn't care, there would be nothing to sulk about. The trouble with quiet payback is that the other person often never notices, so the only heart still aching is yours. Next time, try offering one warm sentence instead of a trap: "What you said earlier — it actually stung a little." That honest line will move them far more surely than any prank you could plan.