CR 12 monsters

The 2 monsters of challenge rating 12 in the fifth-edition SRD.

MonsterCRTypeAC / HPEditions
Archmage12Medium humanoid15 / 99SRD 5.1 SRD 5.2.1
Erinyes12Medium fiend18 / 153SRD 5.1 SRD 5.2.1