>>24524031I like Sun teams, so I run Mega Char-Y with Pokemon that benefit from it, like Synthesis Chesnaught on one team or Moonlight Umbreon on another team.
For Mega Houndoom, you're going to want to run Ninetales. Predictable sure, but Ninetales can be pretty threatening as a mini Char-Y between Fire Blast, Solar Beam, and either HP Ice or HP Ground. Last move should be a support move like WoW or Pain Split.
Mega Houndoom has a lot of weaknesses in the form of Keldeo, Azumarill, Gyarados & Mega, Dragons, etc so the rest of your team should be support that deals with those. Plus, since you're running a Sun team, you want answers to things that might exploit the Sun to hurt you, like Victini or Mega Charizard X.
So a tentative team could look like:
Ninetales (Sun)
Houndoom (Mega)
Tyranitar (Rocks, Fire answer)
Excadrill (Spinner, Revenge killer)
Amoonguss (Water answer)
Togekiss (Stallbreaker, Dragon answer)