Fairy changeling seeking revenge on Hellboy for stealing his chance at humanity.
Their old grievance drives Gruagach's alliance with the resurrected queen and culminates in combat.
Hellboy branded Gruagach with iron and forced him to return Alice, causing Gruagach to seek revenge.
Gruagach's identity as Alice's former replacement links their personal histories.
Gruagach took baby Alice's place before Hellboy forced him to return her.
Explore the full interactive character relationship map of Hellboy
Related entry on Wikidata (Q85863663), public domain (CC0).