Not much is known about Sulik, apart from what little he tells to the Chosen One. He says that he is from a primitive village located by the 'Great Salt Water' which could either refer to the sea or the Great Salt Lake in Utah, and has come in search of Kurisu, his sister who he thought was captured by slavers.
The large bone driven through his nose he calls 'Grampy Bone'. It is connected to the tribal lore of his family and village; through it he is able to speak to his grandfather and other important dead spirits of his tribe, who give him advice, cryptic as it may be.
There are two ways to recruit Sulik without paying the $350. Completing the Rescue Smiley the Trapper quest is uncomplicated but involves either sneaking past or fighting golden geckos. Completing the Rescue Torr quest requires killing the robot run amok, and has the prerequisite of completing the quest Rustle the brahmin, which has the prerequisite of -starting- the quest Guard the brahmin. It is possible to complete both of these latter quests.
Sulik will join the player's team even if they are playing an character with an Intelligence less than 4. At first, he will make fun of the Chosen One, talk about a big hole in your head, but then he will join. The player must have $350 when he attempts to recruit Sulik, as there is only one shot at recruiting him through the dialogue combinations. Either way, Sulik makes a poor recruit for low Intelligence characters due to communication problems (e.g. he cannot be ordered to wait or put away his weapon through dialogue).
Sulik prefers to fight with a sledgehammer, but (even if he doesn't know it) is much better with a famed .223 pistol. He is even better with it once he is leveled up to the maximum, having 12 Action points (highest of all the recruitable non-player characters that can use a Firearm), and will fire 2 shots per turn continuously, even after reloading.
Sulik said that his "sis gone trading another village and never come back". Upon further questioning, he divulged that when he investigated, he found "One survivor. Dude was in bad shape. Said evil warriors with magic torches came. Fire would lick tribe warriors and they'd go to the spirit. [...] The evil warriors tied up the rest and took off. Sis with 'em. Fren, we be find her or dying trying." The description is remarkably similar to that of Hakunin's upon the assault on Arroyo by Enclave soldiers. It is possible that this village was raided by the Enclave as well, snatching captives for experimentation with the weaponized FEV.
'Consulting the spirits', Sulik will provide poetic yet nebulous phrases describing the player's current situation; although the player may learn to ignore these as not being of any practical use, they can be a source of entertainment in second and subsequent games. There is a precise correlation between quests the player has active, and the words of the spirits. This is evidenced by his uncommonly unequivocal reply when asked what the spirits say, while the quest Find out who was responsible for Richard Wright's overdose is active: "This place is full of poison." Richard Wright had been killed by using a jet canister poisoned with radscorpion venom. And when the player has the Return Anna's locket quest active, Sulik says of the ghost who seeks eternal rest, "Hey! They say another bonespirit's here. Needs help." Furthermore, when searching for Vault 13 and in NCR he says "What you seek is not here. The path to that is". It can be interesting guessing, or attempting to deduce, what the spirit communications mean. Some of this advice is not place- or quest-dependent, and can be heard anywhere, although they are more philosophical than useful.
Primary leveling skill: Melee Weapons.
Leveling skills: Small Guns, Unarmed, Throwing, Outdoorsman.
Team members can only use weapons they have the animation frames as Sulik cannot throw grenades, although he has points in the skill. He cannot throw knives, as the throwing animation is separate to the Swing and Thrust knife animations. The .223 pistol is one of a handful of weapons whose animation does not fit their weapon type; it uses the SMG animation, and Sulik can use it even though it is a pistol.
A spear or knife at the start gives him an extra attack more per round than his starting sledgehammer weapon. Although burst weapons are of course always hazardous, Sulik will put the 10mm and subsequent SMGs to good use; he is valuable as a ranged weapon character. He can use any of the top tier melee weapons, and SMGs such as the HK P90c, 10mm ammunition, and H&K G11E, caseless ammunition.
Won't join or rejoin the team if the player's town reputation in Klamath is Hated or lower.
Will leave the party if the player becomes a Childkiller or Berserker or the Chosen One's Karma becomes -101 or lower.
Will attack you if you decide to join the slavers.
Will attack if you attack anyone in Klamath, even the nefarious Dunton brothers.
Sulik was designed by Fallout 2 lead designer Matt Norton.
Sulik returned to the primitive tribe for a few moons (months) after breaking paths with the Chosen One, then headed east in search of his sister. It is left open for future games and fan opinion to close out Sulik's story and decide whether the story of Kurisu, told in Van Buren, is part of it.