I got it guys - I've found conclusive proof that Ridley is in
Smash Bros.
Here's a step by step guide of how I figured it out.
First, I looked on the website, and found a clear hint by Sakurai.
One of the characters is named "Link" - what is this a "link" to? I did some digging, and I'm pretty sure it's Ridley.
Now let's enhance the image, and focus on what this "link" character is holding.
Let's enhance that some more.
It appears that there's some kind of flying creature on his shield. What could it be?
Wait a second here - is that Ridley?
The connection seems undeniable.
There's more though - what's right above the drawing of Ridley? After careful examination, I believe it looks like this:
Wait! What does that remind you of?
That's right, the Illuminati is involved.
Now let's take the number of sides in the symbol above Ridley (nine total) and divide it by the number of triangles (three) and we get a number.
3. What does that remind you of?
BOOM! THERE YOU GO! Ridley is playable, my careful analysis of the "Link" character proves that he's in.
Why else would he grab Pikachu?