Stalky the Stalker was originally the Fan-Made Original Character of Deviant Art user Zerrnichter, who won the OC fan contest.
Aside from entering Captain's room while he sleeps, Stalky went as far as to refill the Captain's mug with tea steaming pink. This led to fans speculating that Stalky is the secret source of Captain's never ending tea supply. Another possibility is that that tea was brewed with the same pink ooze that drove Stalky insane in the first place.
It is unknown how long Stalky has already been following the squad and Stalky's gender has not yet been revealed in the comic.
Stalky is associated with the color pink.
He first appeared whispering his own version of the poem "O Captain! My Captain!" and refilling Captain's mug while the latter was asleep. Stalky is mostly seen stalking and doing things like sketching a nude portrait of Zee Captain, in an obvious parody of the Titanic movie.
He later seems to have developed an obsession to catch the Lifealope in order to make a pair of fluffy slippers for the Captain from it's fur, much to the Lifealope's annoyance. He seems to lack real hunting skills though, as the Lifealope has successfully escaped him more than once. His attempts may be futile anyway, as it is unclear, whether the avatar of life can actually be killed. The only reason Stalky may have survived the very hazardous chase so far himself, might be that the Lifealope's presence automatically healed him or even revived him several times already.
As for his background story, some of it can be deducted from his notes in issue 101. Prior to the apocalypse he seems to have been a soldier, whose brigade "fell to the unmentionable horror"; since then, however, he aimlessly wandered the wastes. Till one fateful day, when he came across a note entailing a guide to the "Treasure of Captania." This note was most likely drawn by Pilot, or perhaps by Captain himself. After attempting to discover the 'treasure,' Stalky tripped and fell down a ruined roadway, losing his gasmask's filter as he did. Unfortunately, he landed on an undetonated but broken bomb leaking strange pink ooze (bio-weaponry), that smelled of pancakes. The pink fumes quickly made their way into his body through his now-broken mask, apparently causing him to become obsessed with Captain. Since then, he has found and followed the Captain around.
Stalky wears a broken gas mask that covers his face. It has pink goggles and a round hole (where the filter broke off), that gives him a slight skull-shaped visage. Since he accidentally inhaled substance from an undetonated but broken biohazard bomb, Stalky constantly exhales pink smoke with heart-shaped bubbles. He wears a camouflage military helmet and a complete backpack with matching pattern. A black military jacket with black gloves and matching pants and boots.
As a rarely seen character, his personality remains a mystery, besides his constant insane craving for spying on the Captain. When the lifealope scanned his memories, it was shown that Stalky was a relatively sane if lonely survivor before he got infected by pink biohazard ooze.
Skills and Equipment
Stalky's headgear consists of a gas mask with big, pink-colored round lenses and a concave and equally round hole right above his mouth and below the nose, where the filter used to be before it broke of. He wears a set of military camouflage gear; helmet and pack, black leather jacket reaching to his knees with matching gloves. His pants are identically black with military boots, and a pair of military binoculars are seen hanging by his side. His weapon of choice is a spade.
As he managed to infiltrate the squad's HQ without being noticed, Stalky seems to have some abilities in hiding and sneaking. On the other hand, said HQ was lacking a few walls, so the difficulty level of that task might not have been that high.
The pink smoke of unknown properties, Stalky is constantly exhaling, has it's origin in him getting into contact with an undetonated but broken bomb filled with bioweapons. What exactly was inside the bomb is unknown (bacteria, viruses or maybe DNA-altering microbes are some of the possibilities). The smoke represents Stalky's addiction to Zee Captain.