Nelliel Tu OdelschwanckEdit
Not much is known about Ulquiorra's interactions with Starrk.
At first, Ulquiorra and Ben were on neutral terms, due to each other's own personal views of difference between allies and enemies. However; since moving to Bellwood, over time Ulquiorra has come to accept Ben as an ally and was even willing to train him to sword fight. He is also enraged about Will Harangue's smear campaign, thinking to himself that while feelings of friendship never mattered to him back in Hueco Mundo, he hopes Ben thinks of him as a friend.
On the outside, Ulquiorra supports Will Harangue's smear campaign, and has offered him evidence that Harangue can use against Ben, but in reality, this is nothing but a pretext. Kevin and Ulquiorra are actually working together to destroy Harangue's campaign, as such a thing angers him, especially after Kevin tells Ulquiorra about the Stalker.