Here's the introduction to him in Episode 10:
Mile Deep And A Foot Wide
By Wing Chun
Back at home, Kat admits Abumchuk is more of a bounty hunter than a boyfriend. He's pursuing her because, as she puts it, "I did something illegal." It seems she stole $1.3 million in casino chips.
In the final episode, Pittsburgh, Abumchuk shows up at Shane's graduation party, where he encounters Celia:
Abumchuk is played by Robert "Bonecrusher" Mukes:
A sports scholarship for basketball was his ticket out to the west coast.
Mukes took the drive and determination he acquired from professionally playing basketball and applied those qualities into his acting.
Robert has spent an extensive amount of time receiving professional training in the field of acting.
Standing at 6'10", Mukes uniquely stands out from his fellow actors. His light, charasmatic presence lends to the humorous side of his characters, while the slight darkness that lingers in his physicality lends to the darker more serious side of his characters.
Weeds gets a mixed grade for the character Abumchuk. On the one hand, his name sounds like a stupid joke, the tribal drums aren't necessary, and the actor playing him isn't Native. (I'm not sure what Mukes's background is. He looks vaguely ethnic, like he might be half-something.)
On the other hand, he's wearing regular clothes, not a parka with a harpoon. He's much bigger than the typical Inuit man. And he's a bounty hunter. All these traits are worthwhile for challenging the viewers' expectations.
True, a bounty hunter is a type of hunter, which is a Native cliché. But so far we haven't seen Abumchuk use his "tracking skills" or brandish a weapon. He seems more original than stereotypical.
Abumchuk appears in one more episode: the Season 3 opener, which I haven't seen yet. I'll let you know how it goes when I see it.
As for Weeds overall, it's entertaining. Season 2 is actually better than Season 1 because the plots and characters thicken. Fans of edgy cable shows like Six Feet Under should give it a try.
For more on the subject, see TV Shows Featuring Indians.
Below: Robert Mukes as somebody other than Abumchuk.