In Career ModeEdit
According to the game guide, Dyno is a loner and has made no friends in the MRC due to his sassy and rude attitude, and he thinks winning is more important than making friends.
His rude nature is shown in the pre-race cutscene for Marina. Here, Dyno stands next to Tag's kart, then points to somewhere and Tag turns in the direction he points. He then breaks the Steering Wheel off of Tag's Kart.
He is possibly an actor too, playing a lion in a children's play. He is most known for being the 16th descendent of Genghis Khan.
In the online minigame, Dyno is known as "Hawaii", and is driving Aloha's kart.