In episode 28, entitled "Somebody's Watchin' Me", Dad falls from a tree and Lil'Sas reveals himself to Mary (offscreen, while Dad lay unconscious) and subsequently rebuilds Mary's garden.
Later in that same episode, Mary and Dad are seen discussing the new garden.
Zombie Pig Men Tribe - A tribe of Zombie Pig Men is encountered in season 2 when Mary and Dad enter the Nether.
Dad entreats them, but to no avail, perhaps due to his poor negotiating skills (and the fact that he kills a couple of them.) Oznog and the monks - Oznog leads a cloister of monks in season 2.
" She then reveals that she has been aware of him for some time (since Dad fell from the tree in epi 28) but did not tell Dad, for fear of his (negative) reaction.
We learn from Mary that Lil'Sas, who is a baby and can not speak, has told her (through sand drawings) that "evil people in helicopters" put him in a cage, forcing him to learn how to read and how to comprehend spoken English. To eventually replace his father, who is being forced to participate in Lax Jerk Cooked Pork commercials.
Jean is depicted as a normal pig with a face that somehow resembles Dad.
In the season four trailer, which bridges the gap between season 3 and 4, Splice realizes that her creation involved the fusing of both pig and "Dad" DNA.
See the graphic novel prequel for more information.
While the ship does not appear in a any full-length episodes, it is featured in MADMA Short Film #2.
Little Sasquatch - Lil'Sas--or his "point of view" more precisely--first appears in episode 27.
A heretofore unknown being takes EG and Splice by surprise and moves from the central portion of the map, through the mysterious bedrock wall and out into the "dirt coffin" where Mary and Dad have been in a long-lasting hallucination that fills the gap between season two and season three.
In the graphic novel prequel, EG Mk 5 is seen operating on Dad while he lays unconcious on the beach after being shipwrecked.