Lucy DeVito (daughter of Danny) voices Chrissy, the eponymous spawn of a wine-carrying, cardigan-wearing Satan, played by Danny DeVito (father of Lucy) — only Chrissy doesn’t know her father is a fallen angel; she thinks he’s been absent from her life for a very good reason: He’s dead. That’s what her mother told her anyway. For the last 13 years, Laura (Aubrey Plaza, no relation to the DeVito family) has kept Chrissy (birth name: Christina) hidden, moving from small town to small town in the hopes of staying off the Devil’s radar. It’s never fully explained why a low-key existence in low-population communities helps Laura and Chrissy avoid the all-seeing eye of Satan (or is that only Sauron?), but it’s easy to believe Laura knows what she’s doing. The tatted-up and totally ripped single mama has been preparing for her daughter’s father to come back into their life at some point — studying demonic spells, taking educational trips to other realms, and generally boning up on how to best defend the Antichrist from Satan — and turns out, that time is now.

On the first day at her new school (her 14th in 10 years), Chrissy immediately meets a nice boy named Bennigan (Eugene Cordero), but that positive introduction is soon overshadowed when she gets her first period, retreats to a restroom, and gets threatened by a couple of bullies who want to post a video of her bloody jeans online. But when all hope seems lost, Chrissy’s eyes turn black, her joints unhinge and, with a few demonic growls, the two punks are brutally eviscerated into gloppy pools of blood. To top it all off, a beam of red light shoots out of Chrissy’s body, forming a black hole in the sky above town. Cows, trash, people’s skin — it’s all getting sucked into the void, while Laura whisks Chrissy away before her bad ol’ dad shows up. Courtesy of FXX

Too late. Despite Laura’s best efforts, Chrissy’s menstruation makes like a homing beacon for Satan, and with very little effort, he’s carried her away to — well, not Hell. Like a sad divorcee still living in a month-by-month motel, Satan has been residing in “the metaphysical realm” due to cosmic laws he can’t break. But with Chrissy’s help, he can fold all the “unearthly realms” into one lawless universe — “like an anarchistic, socialist utopia.” His plan is a little fuzzy while he’s focused on courting Chrissy’s favor, but Laura isn’t so easily pushed aside. The two parents are soon battling over their daughter like “The War of the Roses” with magic spells, until Chrissy forces them into a shared custody agreement: She wants to get to know her dad, but she trusts her mom in not trusting him. Not yet, anyway. Only three episodes into a series, it’s impossible to judge exactly where things are headed, or the dynamic range of certain characters. But “Little Demon” is saddled with a few warning signs as bright red as Chrissy’s sky-opening flash of light. One is a wackadoo moral compass. When Chrissy discovers her powers and murders two older classmates, there’s no regret or horror on her part. Bennigan simply describes the experience as “cathartic,” and the scene’s main emotional takeaway is relief; he and Chrissy can still be friends, even though she’s a demonic killer. So far, the series sports the general attitude that so long as one of the family members does it, it’s OK — which works for its button-pushing comedic extremes, but does little to instill any actual investment in Chrissy’s new arrangement. Even torn between two influential parents — a literal devil on one shoulder, and a kind of avenging angel on the other — Chrissy’s soul seems just fine. Though there’s very little personally at stake for our main character, “Little Demon’s” most glaring red flag is Satan himself. Despite encouraging his demon hordes to fight to the death for his amusement and spearheading bro nights centered around boiling baby heads, the Lord of the Underworld doesn’t appear to be the series’ antagonist. When he finds out a rival ghoul is bothering his daughter, he quips, “I got this weird feeling. What is that? Concern?” before dismissing the thought as a misdiagnosis. (“I think I have to take a shit.”) Satan will lie to his daughter and antagonize her mother, but his intentions aren’t actually evil. Instead, they fit the bill for another “bad dad” redemption arc, where a selfish, lazy, or otherwise uncaring father gets a second chance to make things right.

That’s all well and good. TV is full of long-running sitcoms centered around dads who can’t help but screw up (“The Simpsons” and “Family Guy” chief among them), but it’s a disappointing choice for a show that’s primary hook is the opposite of familiarity. This dad is the literal Devil. Why not let him be bad — really bad — at least for a little while? Why must the pilot be so quick to see Laura give in and let Satan — the devil she’s been hiding her daughter from and preparing to fight for over a decade — share custody? Why does “Little Demon” have to conform so quickly to templates established elsewhere? If the answer is, “to embody them before satirizing them” I’ll tune back in, but the wannabe edgy comedy is already a little too comfortable with its three-person family dynamic. Seeing Satan escort Chrissy through an underworld filled with floating bodies that fart bubbles and game shows designed to satisfy the bloodlust of actual hellhounds is diverting, sure, but it’s far less compelling than less-conforming options. Episodes move at a rapid clip, eager to trade clarifying exposition for extra gags, and some details prove memorably clever (a runner about wicker furniture) or amusingly dumb. (The Devil’s bartender is a snake with arms, who’s simply named Snake With Arms.) The guest list is stacked, featuring everyone from affable vets like Pamela Adlon and Sam Richardson to bonafide legends like Mel Brooks and Arnold Schwarzenegger. Laura, easily the shining star of the series regulars, also gets the best partner in comedy: Darlene (voiced by the great Lennon Parham), the next-door neighbor with more of an edge than her wine nights let on. With a strong cast behind it and plenty of time ahead, “Little Demon” could forge an imaginative reputation through the fires of trial and error. But in order to stand out, it needs to get off the highway and carve its own path to hell — leaving good intentions, and conventions, in the dust.

Grade: C

“Little Demon” premieres Thursday, August 25 at 10 p.m. ET on FXX with two episodes. New episodes will be released weekly and available on Hulu the next day. Sign Up: Stay on top of the latest breaking film and TV news! Sign up for our Email Newsletters here.