Nick Sayre

Nicholas Sayre, more commonly referred to as Nick.

Pokemon
*: starter

Zachary Jones
Nick was a mentor figure for Zachary, guiding him through most of the Sinnoh gym circuit. Zachary strongly reminded Nick of his younger brother. After his defection from society, Nick tried to protect Zachary by pushing him away to stop Zachary’s pursuit of him. Nick stated multiple times that he thought Zachary was a better trainer than he was.

Matthew Sayre
Matthew was Nick’s younger brother. The two of them weren’t very close until after Nick became a trainer. Matthew’s death was the catalyst for Nick’s defection from society.

Chase
Being a dragon, Chase doesn't hesitate to let everyone know this all the while he is loyally defending his beloved trainer. The mutual, loyal relationship between Chase and his trainer results in a profound closeness between the two, to the point of sacrifice.

Trivia

 * His full name is taken from the Abhorsen series, and means "victory of the people".
 * It is implied by the following line that the true fate of many of Nick's pokemon is unknown: "...I'm not giving up Fargo or Harlan. The rest of them have already been taken care of, right? Or—the ones you could catch. How many of them did you kill outright, huh?"