[Spyne98]

There's also Raze, the (future) son of Wolverine and Mystique. He's a shape shifter with claws. He showed up in the All New X-Men run by Bendis.
There's also a group called the Mongrels. Here's some info on them. It's...a lot.
Formed by a group of people who had all been tragically affected by Wolverine, the Red Right Hand was an organization committed to Wolverine's downfall, planning to send his soul to hell. Of all the Red Right Hand's members, none hated Wolverine more than the Mongrels, a group of mercenary mutants who volunteered to personally destroy Wolverine's life.
Wolverine encounters them in "Wolverine" Vol. 4 #10 after being lured to their base in Mexico, and there an epic battle begins. Although each of the Mongrels is a skilled combatant, Wolverine bests and kills them one by one. Only after this does he find out that Gunhawk, Shadowstalker, Fire Knives, Saw Fist and Cannon Foot were all his children, leaving him devastated. To honor them, Wolverine buries his slain children with their mothers.