To be frank, I don't know. The belief that some of my contacts have is that if Cacodemon is real, it's not coming with Doom Guy but another character. Smash Ultimate currently has 11 unfilled dummy slots so, under the best of circumstances, DLC could last another two years. In that time span, Doom Guy could find his way in but, again, to not insult your intelligence, I don't think it would be "Season 2", I think it would be "Season 3" at the earliest, which are also my thoughts on Sora and Travis. So, to be truthful with you based on what I've heard, if Doom Guy's coming it's not going to be for awhile. If I'm wrong, definitely take it as a victory and be well aware of what I hear and speculate isn't definitive by any means. Remember, literally everyone was wrong about the VGAs and this could be a similar case.