Ulrich Elvernest

Ulrich is a strong minded Elf that has been in Nero's group for a very long time, he's 1801 years old and he grew up in the Elf country along with the aristocracy. He learnt to fight with a single katana showing to be a extremely skilled swordsman. As most Elves, his primary element is the Light and his speed is a big deal as well, but his pride as an Elf, in other words, as a original protector of the Nature and the World, loses him sometimes.
Besides that he's very cold towards anyone and he especially hates humans, he visited the real world and he felt so sick and disgusted by how they treat the Nature. So as soon as he met Zack, he felt a strong hatred towards him and he refuses to train him until Nero persuades him.
Nero is a big influence for Ulrich, he knows Nero's backstory and he deeply respects him, always obeying him no matter what he says.
Jack is always trying to defeat him and consider him as his rival yet Ulrich never felt interested in him, and he always ends up beating Jack up in a few seconds or simply avoiding him. Ulrich is the 3rd strongest member among the rest and he's way stronger than Zack but as soon as he starts feeling respect for Zack, he stays around him and offer him help often with the purpose of making Zack stronger.