Bren Derlin was a human male officer of the Rebel Alliance. Bearing the rank of Major, Derlin served as the operations and security chief at Echo Base, the Alliance headquarters on the planet Hoth, under the command of General Carlist Rieekan. In that post, Derlin had to order the closing of the base door to avoid putting the whole base in risk. By doing so, however, he risked the lives of Luke Skywalker and Han Solo, two valuable Rebels. Soon after that event, Derlin served during the Battle of Hoth, and later during the Battle of Endor.from – https://starwars.fandom.com/wiki/Bren_Derlin
Even this miniature is not named in Star Wars Legion and only the Rebel Veteran unit leader, it is clearly meant to represent Major Bren Derlin, who served as Operations and Security chief at Echo Base.