Infernape should use a +Speed nature because currently, it's outsped by stuff like Garhchomp and Mega Pinsir. Going mixed is its best niche over Terrakion:
-Fire Blast/Flare Blitz
-Close Combat
-Grass Knot/Stone Edge/Thunder Punch
-U-turn/Mach Punch/Thunder Punch
Nature: Hasty/Naive
EVs: 168 Atk/88 SAtk/252 Spe
Item: Life Orb
or
-Stealth Rock
-Overheat
-Close Combat
-Endeavor
Nature: Hasty/Naive
EVs: 168 Atk/88 SAtk/252 Spe
Item: Focus Sash
Ability: Blaze
or
-Close Combat
-Will-o-Wisp
-Taunt
-Slack Off
Nature: Impish
EVs: 212 HP/4 Atk/252 Def/40 Spe
Item: Leftovers
Ability: Blaze
Muddy Water doesn't really do Goodra any favors, IMO. Draco Meteor is also preferred for the extra power over Dragon Pulse:
-Draco Meteor
-Fire Blast
-Sludge Bomb/Thunderbolt
-Earthquake/Dragon Tail
Nature: Quiet
EVs: 248 HP/252 SAtk/8 SDef
Item: Assault Vest
Ability: Gooey/Sap Sipper
Greninja needs the raw power of Hydro Pump as opposed to the burn chance of Scald. Without Hydro Pump, Greninja loses out of a ton of power. For instance, Hydro Pump 2HKOs Mega Scizor, while Scald can't. The burn chance shouldn't be relied on for something as frail as Greninja. Extrasensory is also a mandatory move on Greninja so it isn't walled by Mega Venusaur:
-Hydro Pump
-Ice Beam
-Extrasensory
-Dark Pulse/Grass Knot/Hidden Power (Fire/Grass)/Spikes
Nature: Timid
EVs: 4 HP/252 SAtk/252 Spe
Item: Life Orb/Focus Sash
Ability: Protean
Thanks for the set recommendations! Just a question though, is there a specific reason to run 248hp and the quiet nature on goodra? Also I use dragon pulse for more consistent power. I don't like to switch out after a -2 special attack drop :P
Also is the third infernape from pokebank? I didn't realize it even got slack off as a move. If it is pokebank, I wouldn't be able to run the second and third sets for it.
Aaaaand last question lol. Would it be viable to run a specs set on greninja? That way it can still 2HKO mega scizor with scald and can OHKO mega venusaur with extrasensory (correct me if wrong but I'm not sure it can OHKO standard 252 hp mega venusaur with LO? Also don't have calcs atm since I'm on mobile :P)