I noticed that AAARRRGGHH!!! was deleted, even though he used to be a villain. The reason for deletion is being pure good. Android 16 is also pure good, yet he also used to be a villain and has an article here.
I noticed that the reason that AAARRRGGHH!!! was deleted is because "I don't feel this page belongs given his status as a Pure Good even if he was once a villain By that logic Koba should be on the heroes wiki."
I really think Koba is not a good comparison, since I think he should not be in heroes wiki, not because of pure evil, but because he did not do anything heroic. To me, he used to be either more neutral before becoming a villain, or he is already evil, but he later showed his true nature. I remembered he killed another villain out of revenge, but this is likely "Evil vs Evil" or "Neutral vs Evil", which to me is nothing heroic.