Retaining the arrogance and self-entitlement of Goku Black and Future Zamasu, this fusion believes himself to be the embodiment of justice. Reveling in his power, Zamasu openly declared himself the supreme god upon his emergence, repeatedly and consistently vocalizing his divine brilliance and absolute authority. His ego is displayed by how he refuses to even defend himself against Goku and Vegeta (which continues to some extent until Goku blasts off half of his face during a beam struggle), his tendency to hover high over the battlefield to "look down" on everyone both figuratively and literally, and his use of "divine" terms (such as "holy", "judgment", and "absolution") to name his special techniques.

Voice: Goku And Vegeta Vs Merged Zamasu I ENGLISH I Dragonball Super I Episode 65 I English Dub (youtube.com)