Wodin is a member of the Seven Shadows.

Wodin is a very polite, intellectual, but straightforward man with great instincts and analytical skills. He was able to deduce Shion's true identity through their avatar just by seeing their attitude and reactions.

He is a passionate investigator and has the philosophy that the facts and the truth can only be found by your own power. He notes his similarity to Shion in how they both fight using analysis and calculation, although he considers Shion weak because they rely in their clubmates.

(Source: Shadowverse Wiki)