User blog comment:KidLego09/Ridonculous Race Mission 1: Brian Froud's Character/@comment-2212492-20150223103415

I can't believe that people are actually forgetting about Brian's tweet when it was the reason that we found out about Ridonculous Race in the first place, and the tweet got deleted so that Brian wouldn't accidentally spoil anything.

Anyways, it's probably been confirmed that Sam won't be appearing according to the All Stars thing and Dakota not appearing but who knows really, he could appear with some new characters because the writers have to improve the derailments that they did in All Stars and they might as well finally put a rest to Sam's character by giving him some final plot or something.

Harold, on the other hand, is more likely due to the fact that he could appear with a wide range of characters including new characters but the only thing that questions this is Nowen and the fact that it's confirmed to be cross generational and I think they'd probably keep the male and females equal, and Harold with Steve is just two more males so who knows really what's going to happen.