Newt becomes an active opponent of Grindelwald's expanding movement.
Newt investigates Credence because Grindelwald seeks him, joins the fight against Grindelwald at the rally, and later brings evidence of Grindelwald's...
Their hostility is constrained by a magical pact from their youth.
A vial contains a blood pact made by Dumbledore and Grindelwald that prevents them from dueling each other.
Grindelwald recruits and empowers Credence for his cause.
At Nurmengard Castle, Grindelwald presents Credence with a wand and a phoenix while revealing Credence's possible identity.
He exploits Queenie's romantic fears to gain another powerful follower.
Grindelwald allows Queenie to leave after she is brought to him, but manipulates her into joining him through her desire to marry Jacob.
The bounty hunter secretly serves Grindelwald's interests.
Grimmson is secretly revealed to be a follower of Grindelwald before killing Irma Dugard.
He directly helps counter Grindelwald's destructive magic.
Flamel participates in extinguishing the blue fire conjured by Grindelwald after it kills retreating Aurors.
Grindelwald's manipulation of Queenie places him in opposition to Jacob.
Jacob protests when Queenie crosses Grindelwald's blue fire and leaves with Grindelwald's followers.
Related entry on Wikidata (Q1377227), public domain (CC0).