This is one of 3 default outfits of Senriel and this is the third one, his Centurion Warrior outfit

His Centurion Warrior outfit is the only outfit he received from joining the group of wandering warriors The Centurions, Just like the Red Slashers (the one that his brother Ferdinand he's into), the members of The Centurions wields various kinds of weapons, their most primary weapons are staffs spears and specializes long range weaponry.

Outfit Description
The Centurion Warrior outfit he currently have consists of a green ear accessories, a green choker on his neck, white vest with green pin stripe lines on them, green mid length fingerless gloves on both arms, wears black tights that shows and exposes his hips and thighs, his tights are fastened by 2 green strings, and finally wears green boots white thick stripe on the front.