The white star on a black and yellow field looks like DCMS Arkab Legion to me. Why it is included in these photos I don’t know!
Also, the red mech insignia is Trimaldi’s Secutors I believe. Whoops, faulty memory! People above me are correct, the Triskelion sword insignia belongs to Sung's Victoria Commonality Rangers. Nice paint scheme. We should have them, a Sword of Light unit, Skye Rangers, and a Robinson Rangers unit in a grand melee. With visual sensors only. :P