The protagonist of the series. A talking cat who sees ghosts and uses this power to solve murders and to protect Shadowstone Park.
- Disability-Negating Superpower: Lark is disabled in his two hind legs. When not being carried in Pecan's mouth he has to pull himself along with his front legs. However he is also able to see ghosts.
- I See Dead People: Lark can see ghosts, and seems to be the only one who can do so.
- Nice Guy: A soft spoken fellow who uses his power to protect his home and solve murders with the help of his friend. He isn't even a Deadpan Snarker.
- Only Sane Man
- Shut Up, Hannibal!: Upon being told by Neil that the end is coming, he only says "We'll see Neil".
- Talking Animal
- Unusually Uninteresting Sight: Lark barely reacts to much of the oddities in the park. However, he may have just Seen It All already.
Lark's pelican friend. She helps transport Lark around the area.
- Beware the Quiet Ones: She doesn't speak much, but can very easily pin a Harpy Eagle to the ground.
- Heroic Build: Pecan has a six-pack, despite being a Pelican.
- Intelligible Unintelligible: Judging from Lark's responses, Pecan's vocalizations hold more meaning than it would initially appear.
- Talking Animal: Averted. Pecan is the only non-insane animal that can not talk.
King of the Birds and friend of Lark. Was viciously murdered in episode three.
- Creepy Souvenir: His secret hoards of skulls.
- Distinction Without a Difference: When Lark deduces that another bird killed Darius he loudly proclaims that never thought he'd see the day ... and that he always knew it would happen.
- Eyes Always Shut: Sewed shut, and blind.
- The Good King: He ruled with wisdom, patience, and grace. Subverted when his secret is revealed.
- Dark Secret: His secret hoard of squirrel skulls, his secret hoard of wolf and dog skulls, and his hoard of owl skulls.
- Grave Robbing: Collected skulls from squirrels, wolves, dogs, and owls, but wasn't a killer.
- I'm Going to Hell for This: He doesn't want to cross over because he knows he'll go to owl hell for his the above trope.
- Incredibly Lame Pun: "Hoo and Boo, I'm a ghost owl!"
- Non-Answer: When Zoot reveals his Dark Secret he simply says "No comment" and "I can neither confirm nor deny".
A ghost that died long ago and that lives in a cave under Shadowstone Park.
- Creepy Good: They think that death is better than life and that everyone but them has the wrong shape. Yet so far they've only been helpful to Lark, even saving him from Crush.
- The Friend Nobody Likes: Loom finds them disgusting, and even Lark is uncomfortable around them.
- Religion of Evil: Believes that being alive is a sin and that everyone but them has the wrong shape.
- Time Abyss: Was dead well before Lark started seeing ghosts, and claims to be ancient.
The King of the snakes. He likes to sit in a golden chalice.
- Creepy Good: He has a fetish for being pooped on and humiliates Lark, but he is willing to cooperate with Lark's investigation.
- Fetish: Being pooped on. He pays money for it.
- Lonely at the Top: Claims that none of his snake subjects talk to him because of his obscene wealth. Though it might be for other reasons.
- Treasure Room: Downplayed. His open-air palace is littered with gold coins and gems, but there are no real piles and they are spread sparely on the grass.
A horse who wears gloves. He was murdered by Crush while eating oats.
A Harpy Eagle who murdered Gloves.
- Disproportionate Retribution: Murdered Gloves for having an unfunny joke.
- Dying as Yourself: At the request of Lark, Crush agrees to leave Shadowstone Park while she is still lucid enough to do so on her own. Unfortunately she doesn't manage to, resulting in her murdering Darius and kidnapping Lark.
- Sanity Slippage: Crush slowly went insane, culminating in her murdering Gloves.
A rabbit who was murdered by others.
- Dark and Troubled Past: Loom's last words are that she lived an average life and has many regrets.
- Deadpan Snarker: "Welcome to the ghost zone."
- Eaten Alive: How she died.
- The Eeyore: Does not even seem upset about having died.
- Lying to Protect Your Feelings: Loom tells Lark to tell her friends something uplifting, such as that she turned into a tree when she died.
Darius' successor and new Queen of the Birds.
- The High Queen: Arrives with Pecan to rescue Lark from a building he is stranded on. States that it is her duty to protect her subjects and allies.
- Warts and All: When giving Darius' eulogy she states that the late Owl King ruled with wisdom, patience, and grace. He also reveals that Darius was "a deviant skull weirdo".
A mongoose who died years before the events of the series.