Vocally, Endoh specializes in sustained high notes, covering the upper male range that the other male members cannot hit easily. Although he is a very versatile vocalist, Masaaki Endoh rarely writes with the group, although he is becoming more active towards the recent best albums. Some of the songs he wrote for the group include "SAMURAI PARTY" on THUMB RISE AGAIN, "Kimi no Moto he" on X cures Earth, and "WE ARE ONE" on AREA Z. He has shown particular favor to a special type of outfit he wears to most performances, a jacket that is cut at the shoulders, revealing his arms. His hair is usually styled high in concerts.