It's kind of surprising how many times Wart has been portrayed as a friendly or otherwise non-malicious figure - like for any other kid friendly villain or rival it would be practically inevitable (you don't really get Tom & Jerry T-shirts where they're angrily grimacing at one another) - but for Wart they may as well be a majority of his appearances.
OK, maybe that last one isn't exactly as protagonistic as the others...

Back in 1989, a company named Nexoft was making Super Mario themed greeting cards. They were pretty interesting, Nexoft created original art for these cards. What’s really interesting though, is that they usually depicted Wart as somewhat of a friend. pic.twitter.com/xqWtZbPbxN
— VideoGameArt&Tidbits (@VGArtAndTidbits) May 29, 2019




OK, maybe that last one isn't exactly as protagonistic as the others...