Joker in a personalized atlas mech would be awesome (and, yes, more Seth Green would likely be fun, too). Travelling with a Reaper - or a minion - would be too much like adventuring with a darkspawn - too dangerous and/or too awkward for all concerned. Blasto is far too much of a Diva, constantly complaining about his lighting, or his script, or his camera angles, or his up-front-time - too much tentacle-holding for that one.
