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Mario is clearly Idle Animation.
Sonic might be Guilt-Based Gaming under the "guilt based idling" category. "Don't walk away, or Sonic will kill himself!"
Neverhood might be Continue Your Mission, Dammit! or lampshaded Take Your Time if this is treated as an urgent choice but really you have all the time you want. I'm not sure though. It reminds me of the Dealer snarking at you similarly in Hand of Fate 2 if you idle in certain places. "I've waited a hundred years for my revenge. What's a hundred more?" If it's particularly silly (like every 5 minutes they say something else, and there are new lines for hours), it could rise to the level of Easter Egg.
Edited by KD
About the Sonic example, it's specifically in Sonic the Hedgehog CD where he does that. In the other Sonic titles, Sonic gets visibly impatient with you if you take too long, but doesn't move from his place. And IIRC, Sonic just jumps off the screen in a way that's ambiguous whether he's actually dying or just pulling a Screw This, I'm Outta Here. In any case, it also counts as a Non-Standard Game Over.
If a player takes too long to do something, the game comments on it in some way.
Examples:
- Sonic the Hedgehog: If you step away from the controller for too long, Sonic will jump off the stage and die.
- The Neverhood: If you take too long to make the Last-Second Ending Choice, the bad guy will tell you to take your time.
- Super Mario 64: Mario will sleep if you leave him idle.
Edited by MissRoboto