Madame Cherie!
You can proceed and not know about/have watched Danny Phantom; I did try to make her slot into the world as if she belongs there though, so having a bit of knowledge of the show might help!
About her!
Madame Chérie is a rococo era ghost who is pretty polite. Like, she usually means well, and any shenanigans involving her would be because she's a little ditzy and materialistic and tends to be impulsive. But she's surprisingly generous and willing to help when anyone asks nicely for help! She's also pretty big on manners. You better be saying please and thank you at the very least. She has a big Versailles's style palace with the garden and all as her haunt and is happy to host parties and balls there!
she's like Spectra in that she can disguise herself well enough to walk around in the human world. She only really makes trips there to get desserts and new clothes (she has a HUGE WARDROBE.) (Her human clothes design here is obviously Chanel Inspired. She's a designer gal, no less! People tend to assume she's a snob because of that, but she really doesn't hold anyone else to that standard, just herself...if her appearance is disheveled she panics)
She's got 2 pet swans that get Huge When Angry like Cujo, and WILL attack anyone who makes her mad. she doesn't do any fighting herself, because she prides herself on being 'ladylike', she'll just pull out a fluffy feather fan and watch and laugh because if you made her really mad you probably deserve it.
Also, she never takes off her neck pearls regardless of what she's wearing...because, uh, there's a death scar... (considering she was a rococo noble, you can guess how she went... :"))
She has cute pet names for every single character she meets and tosses french words into her vocab all the time.
Danny is 'my little star' because she thinks when he does his lil tail and flies around he looks like a comet (and shes SEEN him in several starry/space outfits), sam is 'my mourning raven' because...Chérie is CONVINCED sam is in mourning because of all the black she always wears. (yeah, she assumes she's mourning danny's half-death, lmao) and tucker is 'my little genius' because. Technology confuses and delights Chérie and you might as well be a wizard to be able to work it in her opinion. She's like a grandma, very enthusiastic to try to learn but struggling SO MUCH with it. RIP queen you would've loved ordering clothes online.
And also, her giant attack swans. Her beloved cygnes!
My Art of her!
(the next few ones are from the sims! art adjacent enough for me to want to share hehe)
more can be found by clicking more art + fanart!