Robbie the Assistant

[tomangelo]

I think that it could be existing like out-of-universe object, I mean that Robby/Robbie doesn't even exist in game world. It's only visible for a player. It wasn't send by Houston, Me don't actually know that there is little flying "toaster" around his head. It would give some tips, tricks or another help for a player, like "You can control your character by arrow keys", or "Sniffer can check, if ground is flat". It would be especially efective in exercise levels, where it could talk about some (for example) good programmistic behaviours.