An averaged sized, thin apprentice with short that's relatively messy since he plays in dirt but doesn't clean himself often. Blu's personality is almost as spontaneous as his fur colors. Jumping from thing to thing, Blu is very hyperactive and energetic. He has a fast-moving voice, and talks a lot. All of the other wolves his age make sure not to let him make any decisions on his own, because when he does, it never ends well for anyone. He's reckless and gets hurt a lot as a result. His best friend, Skye, licks his wounds clean if they're minor.
Blu can't remember how he got into the Future Pack, but he clearly wasn't born into it. He typically finds himself drawn to Forte because of her motherly attitude. He enjoys listening to her stories with the other apprentices. Blu and Prince often challenged eachother, and Prince usually won due to his bulkier size, which led to the two having a relationship of bitterness and jealousy.