The title screen featured in the old Sonic 2 betas isn't animated unlike the later final version which changes Sonic and Tails designs.
However since it was a late change in Sonic 2's development *since alot of Betas have the old title screen and even the Game Gear Version used it as a basis* in a Japanese commercial for Sonic 2 you can see how it was meant to be animated, Sonic giving a thumbs up and a wink.