>>24763814The best competitive Fire Type are MCharizard Y as nuke and Heatran as versatile Tank. Talonflame is mostly used as a physical Flying-Type Attacker factoring the Fairy and Steel Resist that Fire- gives, sometime it uses Overheat but is a rare sight.
Infernape can have some use as a mix of heavy hitter disruptor thanks to Close Combat and Overheat. The other two are a toss up between Fake Out, Quick Guard, Protect or Feint. It has its niche and it does well.
MHoundoom is another kind of nuke, MCharizard Y works for himself, MHoundoom works with the whole team, you don't even need to use Sun or just can use Meowstic/Sableye to set up and start to dish damage. Solar Boost bolster the Special Attack per se, basically giving it a Choice Specs without being locked, Solar Boost Sun boosted Heat Wave dish out a huge damage even against it resist, and it's one of the few Dark Types that don't care too much about Fairies, the other being Bisharp. This said, it sees few use.
Arcanine is an all-around player, if you use at as dedicated attacker, you're better using Darmanitan, if you're using as a support or Tank, its better using Cresselia, Meowstic(M) as support or Heatran as a tank.
You can throw as a offensive tank/support thanks to Intimidate, Extreme Speed, Flare Blitz and two of Morning Sun, Helping Hand or Will-o-Wisp.
I personally have two Arcanine, an offensive one with FBlitz, ESpeed CC and Morning Sun, and a defensive one with Helping Hand, Will-o-Wisp, Morning Sun and Heat WaveDarmanitan, most people say that it's slow, but it has raw power and slapping a Scarf on it makes it up. With inmediate power, it can dish heavy damage if the opposition isn't prepared. Remember that in Doubles, Scarf isn't everywhere and Darmanitan can dish heavy damage even after Intimidate.
All of them have their uses, but sadly, they aren't the best. It all boils down to team composition.