>>45326918Wigglytuff, only because when I was very little, I was given Pokemon Red as a gift by someone older who didn't want it anymore. It had a near completed file and on it was a very high level Wigglytuff with Mega Punch and it beat most things in one or two hits. I thought Wigglytuff and Mega Punch were super strong as a result of it, so I always used it.
As a kid, I didn't fully understand stats or STAB or the point of status moves (except for poison) until around Gold with the Battle Tower.