Koga

Koga is a male brown, black, and white wolf and the second prophet of Wolfshire, sent with Apocalypse.

Description
Before Guardians existed, there were very similar wolves called prophets. The prophets were chosen by Lucan to help in the land of Wolfshire, but were granted very few or no powers at the time. The first prophet to be sent was Apocalypse, a wise black wolf with a red diamond on the side of his muzzle.

Many other prophets were sent to Wolfshire and helped solve severe situations. After 10 were sent, Lucan decided that the prophets should be granted powers to help in the land. He sent down Guardians, with powers capable to solve more severe situations.

After this proved to be better, Apocalypse and Koga were sent to Wolfshire a second time to help the wolves of Alpine Rock. Icebound was leading his pack in the March of Hunger, and the ice was cracking and would likely break the entire land. Unable to solve the situation without powers, Apocalypse and Koga asked Lucan to send a Guardian, and they were transformed into Crimson and Karoph, the future major Guardians chosen by Lucan.

Quotes

 * "Apocalypse, you're finally awake. How long has it been?"
 * "We now know each other because we were chosen to solve a dire situation right now. Follow me, brother."
 * "We exit the Time Scar and leap back in really quick. I hear there's a chance you can transform into another wolf if you do that."
 * "We are spirits sent by Lucan now. We are no longer prophets. We are Guardians. Prophets with the spirits of past prophets. We're the two Guardians now. We have powers. We can fix this."

Trivia

 * Koga was sent by Lucan at the same time Apocalypse was.
 * Of all ten souls of the past prophets, Koga's is the strongest in Karoph. As a result, Karoph is most similar to Koga.
 * Karoph was able to transform into a lion because Koga was able to transform into certain creatures.