Found out that this unnamed LEGO Arc Trooper is actually a named Clone in Season 3 episode 2 (“ARC Troopers”). He is seen for a few seconds and goes by “Hammer”. I
Amazon.com: LEGO Star Wars ARC-170 Starfighter (8088) : Toys & Games
LEGO Star Wars: The Clone Wars - AV Figures Captain Rex, C… | Flickr
DISNEY ARC Clone Troopers Building Blocks LUKE Skywalker Mandalorians Boba Fett Palpatine Yoda R2D2 Bricks Action Figures Toys|Blocks| - AliExpress