Sin of Friday

Sin of Friday was an armor that was part of The Original Seven. It was specially designed to fight in a combined form with Sen of Saturday. It was owned by Carossa, who's twin sister Melissa owned Sen of Saturday. This made them a formidable pair on the battle field.

When docked in The Original Seven satellite ring, Sin of Friday resembled a Tonfa.

Sin was a member of The Original Seven Armors. It's designation was Friday.

In its compact form while docked in it's satellite resembles a tonfa, while in its battle state, it is hunched backwards with large hind legs and a tail. Carossa uses a tonfa to summon and control Sin.

Sin, along with its sister armor Sen, differs from the other Original Seven because it has a non-humanoid structure.

Carossa was able to pilot Sin without the need of reconstruction. However, it is highly likely that both Carossa & his twin sister Melissa were genetically engineered in order to pilot the two armors. Also, their familial bond is likely what makes the combination of Sin & Sen so effective.
When battling it wields a tonfa which can morph into different weapons. Sin and Sen can combine into a single Armor to increase their attack and defense, but can just as easily separate again. It can also fire energy beams at an extremely rapid rate and is protected by an electromagnetic shield.

Sin seemed to be the more aggressive of the twin armors. Carossa used it's melee weapons to fight up close against Van. Carossa was also extremely agile using Sin, able to avoid Van's close range attacks with ease.