In 2005 (2006 in NA), a game called Drill Dozer came out in the last stages of the Game Boy Advance's life. Its protagonist was Jill. In this game, you had to collect some diamonds from an evil gang called the Skullkers.
The game was developed by Game Freak, best known for Pokemon. Jill had an appearance in Brawl as an Assist Trophy, but beyond that has had no other appearances.
This thread is here to pledge your support for Jill in Smash Switch, if you please.