Maruyama has black, spikey hair, with narrow eyes. He wears a support sleeve similar to Oikawa's on his right arm.
Tokyo Nationals ArcEdit
He is known to have a strong cross spike. It's shown he can perform a jump serve.Maruyama is also proficient at receiving and it is stated by Suga that he is very skilled at performing blockouts.
- Favorite food: Horumonyaki
- Current concern: "Could it be that I’m a coward…?"
- His star sign is Scorpio.
- Kazuki (一喜) - One Joy
- Maruyama (丸山) - Round Mountain