I’ve been reading up on Mona a little more. Her bio in WarioWare, Inc.: Mega Party Game$! says she smitten with Wario. She’s been in seven games with Wario and she has a cameo in Super Smash Bros. She is definitely Wario’s princess

Hold up! What about Princess Shokora and Mona. Mona’s probably a stretch because there isn’t romance. But Princess Shokora kissed Wario.