Stinkmeaner is the most evil of human beings to ever walk the earth. He is sadistic, nihilistic and terrible to everyone he meets, and enjoys the pain and anguish of other people. He claims to hate most or everyone in general (especially black people), but in truth, he justs loves being bad. He lived a long, terrible life, as when he got killed he is sent to hell (possibly aged 66), where he literally felt truely much more happy than he ever had. He uses the phrase "Bitch ass nigga," or "nigga," in almost every sentence he uses and even called The Devil (a Satan) himself a "Bitch ass nigga". He often pronounces "nigga" like "nyi-cuh" and over enunciates it.
In background information, Stinkmeaner always loved Sarah Dubois but he was 40 by the time she was 4. He fell in love with her when he spotted her watching the sunset and dolphins, but he knew he was never good for her. But when he got inside Tom's body; he took advantage and had a night of wild sex and did her good and she got knocked out from all the pleasure. After he was finished with her, Stinkmeaner got dressed and headed out to kill grandad.
Stinkmeaner died in a street fight with Robert Freeman during a 'Nigga Moment.' In every episode Stinkmeaner is involved in after his death, Robert will openly say that he doesn't regret his death, and that he should've died. It's only staring death in the face at the hands of 'The Hateocracy' that he admits that his death was a mistake.
He returns as a vengeful spirit in Stinkmeaner Strikes Back in which, after some martial arts training in Hell, he is sent by Satan back to Earth to exact his revenge. He possesses the body of Tom Dubois and makes him do crazy things at the most inappropriate times. Eventually he makes his way to the Freeman house and attacks Robert while he's posting videos of himself on the internet on the toilet. Huey and Riley come to his aid and the Freemans fight him. Stinkmeaner beats them all effortlessly but is eventually subdued when Robert ties up his legs with his belt and Riley knocks him out with Robert's statues. They tie him to Riley's bed and invite Uncle Ruckus over to exorcise him out of Tom's body, but none of his methods work. Eventually Huey helps Stinkmeaner find common ground with Uncle Ruckus because they equally hate other black people and his soul is exorcised out of Tom's body.
He appears a third time as a ghost narrating the story of a crew of elderly self-hating racist bigots (Lord Rufus Crabmiser, Lady Esmeralda Gripenasty, and Mr. George Pistofferson) of which he was the leader. They caused a series of problems for the other nursing home residents and made their lives a living hell, so eventually they were kicked out, and split up.
When they heard of Stinkmeaner's death, they came to Woodcrest to kill Robert Freeman and his family; Gripenasty and Pistofferson went after Huey and Riley while Crabmiser went after Robert. After a long fight, the three Freemans barely escape with their lives so they attempt to hire a bodyguard.
First they try Ed Wuncler III, but he's too reckless, so Huey suggests they hire Bushido Brown. Brown proves to be too high maintainence and they take forever to make their move again, but they appear seconds after Robert has just fired Brown, prompting him to immediately rehire him and they fight.
He does well defeating Gripenasty and Pistofferson but Crabmiser decapitates him with his flying guillotine. Afterwards they reveal that they never really cared for Stinkmeaner in the first place and would've attacked them anyway regardless of it. Hearing the commotion, the police arrive and arrest the group for assault and murder, and Stinkmeaner remarks that being in Hell is better than being in jail.
In life, Stinkmeaner didn't seem to have any particularly outstanding capabilities that an old, blind man wouldn't have. Being killed by Robert Freeman in a street fight (as said above.) While at first it was believed by Huey that he had increased his other senses, the reality was that he was lucky in his and Robert's first encounter (when Robert went to punch him, he accidently hit Stinkmeaner's cane with his foot, alerting the latter to his intention.) It should be noted that he may have had some skill at leadership, since he was the 'general' of the Hateocracy, though there is almost no actual evidence beyond what his colleagues said.
In death, however, he has several abilities that are due to his new nature as an evil spirit.
Stinkmeaner had the ability to posess the living in order to interact with the physical world (through Tom Dubois.) He mostly utilised Tom's body in order to reap revenge upon the Freeman family, as well as having relations with Sara Dubois.
Enhanced Physical Abilities:
Stinkmeaner seems to have been capable of augmenting Tom's posessed body to accomplish almost super human feats of strength and agility, he was capable of almost completely overwhelming the entire Freeman family alone, before being forcibly tied down by Ruckus and Roger.
Stinkmeaner was briefly seen to be capable of levitating Tom's body into the air during his exorcism, it is unknown whether this was actually an ability he posessed or whether this was simply a reaction to the exorcism.