Inside the Willow Mansion

 is an American animated adventure-horror television series, being created by TBD. It is produced by Nickelodeon Animation Studios and it airs on Nickelodeon since October 13th, 2023.

Synopsis
Two tween kids (a brother and sister) and their pet hamster discover a dark mansion on top of the hill and decide to explore it, only to come across some spooky and crazy ghosts and monsters roaming while getting into situations.

Main

 * Timothy Ravenswood (voiced by TBD) - an spoiled and rude tween boy who would rather get what he wants instead of whatever the other wants while also claiming he's not scared of anything, yet is actually a scaredy cat who gets easily scared of whatever happens in the Willow Mansion.
 * Tasha Ravenswood (voiced by TBD) - an intelligent yet sarcastic tween girl who dislikes dealing with Timothy's antics and often tries to be his voice of reason, but is often pushed aside by him for the most part.
 * Chippy (vocal effects by Dee Bradley Baker) - a comedic and sometimes hyperactive hamster who is Timothy and Tasha's pet and is often brought along with the two and sometimes finds the solutions to escape a scenario.

Supporting

 * Liam Willow (voiced by TBD) - the charismatic yet mysterious owner of the Willow Mansion who is now a ghost as he is rather friendly and decides to guide both Timothy and Tasha through the manor.
 * Shailey Watanabe (voiced by TBD) - a popular teen student who has a strange crush on Timothy despite their age difference, often arriving to the manor.
 * The Slobby (vocal effects by TBD) - a little slime dog that resides in the manor as he is very energetic and loves Chippy as well.
 * Carter Plaster (voiced by TBD) - a cocky and curious journalist who is mad about the supernatural as he often investigates the manor, although he is clueless.

Antagonists

 * Veronica Von Audaire (voiced by Cissy Jones) - a cruel and vindictive ghost who used to be Liam's girlfriend as she forms an alliance with Max to take over the mansion and to get rid of Liam for good.
 * Max Ploppers (voiced by TBD) - a cocky and egotistical ghost who used to date Liam as he grew angry at Liam and forms an alliance with Veronica for revenge.
 * Zoe, Chloe and Chuck (voiced by TBD, TBD and TBD, respectively) - three mischievous and dangerous ghosts who make it their goal to prank and terrorize innocents, catching their eyes on the Ravenswood twins.
 * The Gardener (voiced by TBD) - a giant and terrifying groundskeeper like ghost that has been hunting after people, believing them to be like weeds.