A McDonald's commercial from 2002 showed the Republican candidate at his most presidential.
Trump/Grimace '16? At this point, it seems like an inevitability. Trump's ominous "We could own this town" line says it all. He's just set his sights higher these days, like on the whole country. And when you think about it, Grimace is perfect to run alongside him as his vice presidential candidate.
Grimace adds everything Trump lacks to the ticket: likability, gravitas, public speaking skills… plus he's never said anything offensive about women or Mexicans (that we know of), even though he was originally introduced to the McDonaldland universe as a villain!
Then again, Grimace's change from bad to good could be seen as a flip-flop. That's one thing you've got to hand Trump. He's always been a villain.