Matsudo is a mechanic from Tokonosu Prefecture that's a mechanic at the Takagi Estate.
The character of Matsudo is a supporting character of the manga/anime series Highschool of the Dead that was written by Daisuke Sato and illustrated by Shouji Sato. The series first began serialization in Fujimi Shobo's Monthly Dragon Age magazine in July 2006.
His first appearance was in Hightschool of the Dead Volume 3 CH. 10 "Father Knows Dead", and his first anime appearance was in Highschool of the Dead - Episode 10 "The Dead's House Rules". His character in the Japanese series is voiced by Kenji Hamada, and the U.S. dub produced by Section 23 is performed by John Gremillion.