Cross served as the commander of New Hammerston's armed forces prior to the events of the story. Despite presumably having earned his rank, he was known to have a lousy shot.
With his new powers Cross breaks into Rosa's house and kidnaps her, intending to turn her into a zompire too.
At some point Rosa manages to escape from him. Despite having bitten her she is only a vampire, and not a full zompire.
Arriving in the church, Cross attacked Dominik. Though overpowered Andrius soon arrives and allows Cross to feed on his brother.
With his new power Cross manages to easily defeat Joe, though is prevented from killing him by Andrius. Although Cross attempts to disobey Andrius, he cannot. Following Jake's arrival the pair flee.
Next appearing in Rebel, Andrius informs him that in order to defeat the Vampire Elders they will need an army. To do this Andrius suggests that they head over the seas. Although Cross refuses at first, Andrius easily forces him to comply.
Arriving at Hammerston Harbour, Cross notes the presence of a boat. Noting the presence of some humans nearby, Cross planned to take them out straight away. Andrius however held him back, saying they would use their minds instead.
Following Andrius' attempts to persuade Phillip to head to Europe (by taking him into a scene of paradise in the Dream World) Cross approaches the elder and expresses his distaste for his methods, though Andrius replies that while human's are actually quite strong, their minds are weak.
He is shown in the hold of the Ark along with Andrius plotting their grim future.
Even prior to being turned Cross was a selfish, power hungry character. Following his turning he is now self loathing too, and appears to be a masochist.
Although he seems to have been held in respect by the people of New Hammerston, he seems to have had no real relationships with anyone in the town.
Being essentially Andrius' disciple, the two would be thought to be close. In reality however Cross despises his master.
Cross was infatuated with Rosa, though she did not feel the same way about him.
Human Cross was noted as a remarkably poor soldier, being a poor shot and having terrible aim.
After being turned he gained a great amount of power (including all of the standard zompire abilities such as notable strength and speed), his subsequent feeding on Dominik also improving this.