This was already mentioned, but I definitely believe the picture and the words refer to Full House. Three Aces and two Kings is a Full House.
And this picture...
...appears to correspond with the characters in this picture:
I'm just guessing here, but I think he just wanted to push us in Bob Saget's direction. Once we make the connection to Bob Saget, I believe we can disregard any other character, actor, or actress affiliated with Full House.
I'm not very confident in this, but I keep going back to Sagat from Street Fighter. The important thing to note is that Sagat wasn't in the beta files. I don't think we can connect these hints to any character seen in the beta. Therefore, if this particular character was not found in the beta (Sagat or not), then we can say with absolute certainty that there are more characters than what's been uncovered.