>>713848856 (OP)To be a "rival" enemy. Part of it is by design, especially in the games Sonic can't lose because that'll fuck up the status quo. Doubly so in crossover comics where you can't have plot critical events hinge on an entirely separate universe owned by an entirely separate company. So Sonic gets to meme on Darksied, Batman gets to meme on Metal.
The other side of the story is Ken Penders. Which is a quagmire so stupid and shitty that it requires a wholly separate conversion. Just know that because of him, Sonic will always be static, which means Metal can never truly win against him