2 species have Blaze as a hidden ability, 27 as a normal one

Effect, in PokéAPI's words

“Strengthens Fire moves to inflict 1.5× damage at 1/3 max HP or less.”

As a hidden ability

Species	Slot	Note
Pansear	Hidden
Simisear	Hidden

As a normal ability

Species	Slot	Note
Charmander	Normal
Charmeleon	Normal
Charizard	Normal
Cyndaquil	Normal
Quilava	Normal
Typhlosion	Normal
Torchic	Normal
Combusken	Normal
Blaziken	Normal
Chimchar	Normal
Monferno	Normal
Infernape	Normal
Tepig	Normal
Pignite	Normal
Emboar	Normal
Fennekin	Normal
Braixen	Normal
Delphox	Normal
Litten	Normal
Torracat	Normal
Incineroar	Normal
Scorbunny	Normal
Raboot	Normal
Cinderace	Normal
Fuecoco	Normal
Crocalor	Normal
Skeledirge	Normal

Elsewhere in PokéAPI

3 more holders without a page here

Alternate forms and other species that PokéAPI lists with Blaze.

Charizard Gmax, Cinderace Gmax, Typhlosion Hisui