Pyroar
STAB attacks super effective against Viola, Ramos, Wulfric, Wikstrom, and part of Diantha's team
Weak to the main STABs of Viola's Surskit, Grant, Korrina, Siebold, and part of Diantha's team
Really solid Special Attack and Speed
Learns moves like Flamethrower and Dark Pulse
Fairly shallow special movepool
Okay defenses
Evolves somewhat late
Overlaps the Normal type with Heliolisk
Flareon
STAB attacks super effective against Viola, Ramos, Wulfric, Wikstrom, and part of Diantha's team
Weak to the main STABs of Viola's Surskit, Grant, Siebold, and part of Diantha's team
Brilliant Attack
Pretty good Special Attack and Special Defense
Learns nice moves like Quick Attack, Return, Strength, and Flare Blitz
Doesn't overlap types with any other team members
Godawful movepool
Middling Speed
Pretty bad HP and Defense
They both work in-game. However, I would choose Pyroar. It can be obtained earlier, has a slightly better movepool, and is faster than Flareon. Here's a potential set:
Pyroar @ Silk Scarf / Charcoal
Ability: doesn't matter
- Flamethrower
- Dark Pulse
- Hyper Voice
- filler
Hope I helped!