Hellboy is a 2-star based gold Arcane hero.
His shards can be obtained in his challenges.
His passive's wording can be misleading; it gives Hellboy healing equal to a percentage of DoT he receives, up to a cap (% of his max health). This does not define his DoT reduction - he always takes no damage from damage over time effects, no matter how strong they are.
- Just like Sub-Zero and Raiden come from Mortal Kombat, Hellboy is a guest fighter who comes from Dark Horse Comics.