User blog comment:TheFoolisherFoolishFool/I don't see Ridley being playable at all.../@comment-5773940-20141030010003

1. True. Captain Olimar's 2 inches tall, and he's about the size of Larry Koopa in Smash, who is near the size of a slightly small grown man.

2. ha

3. I'm pretty sure Sakurai would find a way to make Ridley less powerful. He even finds ways to make movesets from characters with pretty much nothing to work with except their last names.

4. That's actually a pretty awful reason. The Koopalings and Bowser Jr. are the same species as Bowser. And, if you consider the fact that Pokémon stands for "Pocket Monsters", then there's about 9 more characters into perspective.

5. I'm also sure that Sakurai would make Ridley more child-friendly, though his definition of "child-friendly" is pretty broad.

6. Actually, as long as they merely mention it in his trophy, I'm sure it wouldn't get higher than a "T" rating. Or less.

I'd say the most likely reason is that he was a boss in the SSE, but that doesn't prove anything if you think about Melee.