Merging or increasing one's rank near a Cogneur grants them a Clover leaf. After gathering a Shamrock the Cogneur's damage increases by 18 % for each Shamrock before turning rabid. After gathering 2 Trefoils complete, his attack speed in enraged state increases by 20 %. After obtaining 30 Trefoilsdamage bonus is reduced to 9 %.

Merging or absorbing a Cogneur confers a Clover leaf at 3 Random Cogneurs. Bringing together a Shamrock the damage done by enraged stalkers increases by 10 % for each Clover, and Decoupled Rage is activated, with an attack speed bonus of 25 %. If he recovers 6 Trefoils  or more, it has 50 % chances of his rage increasing tenfold. After obtaining 40 Trefoilsdamage bonus is reduced to 5 %.

When he harvests a Shamrockor with 10 % chances by collecting a Clover leafthe Cogneur launches a mug which leaves a puddle behind, reducing the armor of monsters by 30 % (maximum : 60 %) and increases mana received by 30 %. The puddle remains active for 10 s.

After collecting a Shamrock the Cogneur dissipates the negative effects on 2 Random Coggers.

Le Cogneur has 5 % chance to throw a powerful punch when attacking a boss or mini-boss. This punch inflicts 500 % the damage dealt by the Striker.

The Cogneur's damage increases by 10 % for each monster on the road. The maximum bonus is 80 %.

The first Cogneur appears as Driver. As long as a Driver is on the battlefield, the critical chance of all Cogneurs increases by 5 %. If a Driver is merged, it leaps onto the most powerful monster on the road and executes it instantly. If none Driver is present on the battlefield, a random Bruiser with a lower fusion rank becomes Driver after 30 s.