Yuusuke Kozaki has a character design credit for Speed Grapher.
character design
TV anime / 2005
original character design
TV anime / 2023
Movie / 2017
TV anime / 2016
OVA / 2016
Movie / 2018
Movie / 2019
ONA / 2006
ONA / 2022
Movie / 2024
original creator
Special / 2013
ONA / 2021