Mega Tyranitar has just enough Speed to pull a Dragon Dance set. It also doesn't need much defensive investment due to its good natural bulk+Sandstorm:
-Mega Tyranitar w/Tyranitarite
Nature: Jolly
Ability: Sand Stream
EVs: 252 Attack, 252 Speed, 4 HP
Moves: Stone Edge, Earthquake, Crunch, Dragon Dance
Scoilpede > Ninjask because Scoilpede is bulkier and can actually deal damage.
-Scolipede w/Focus Sash or Black Sludge
Nature: Jolly/Impish
Ability: Speed Boost
EVs: 34 HP, 252 Attack, 224 Speed or 252 HP, 252 Defense, 4 Attack
Moves: Megahorn, Swords Dance, Baton Pass, Protect/Earthquake
Blast Burn is a bad move on Charizard because of the cool-down turn, which leaves it very vulnerable. Air Slash doesn't really hit anything harder than its other moves can. Heat Wave is also unnecessary and better for Doubles. A better moveset would be: Flamethrower/Fire Blast, Solarbeam, Dragon Pulse, Focus Blast
Assault Vest Goodra doesn't really need any Sp.Defense investment. It's naturally high Sp.Defense and the Vest give it all the Sp.Defense it needs. Put those EVs into HP instead so it can handle both sides a bit better. Also, Focus Blast or Thunderbolt is better than Muddy Water, for type coverage. And Hydration is only useful when its raining, and this aint a rain team. Sap Sipper or Gooey are better abilities here.
You'll wanna use a Hasty or Timid nature for Greninja. It's really frail, so Calm doesn't help it survive anything. Hasty/Timid allows you to make sure it outspeeds things. Also, Hydro Pump is the preferred Water STAB because of the power. Greninja needs all the power it can get. Scald is better on bulky pokes who can take a hit and are fishing for the burn chance.
Nah ンン
“No, I... I have to be strong. Everyone expects me to."