Charlie Morningstar

Charlie is a tall, slender hellborn demon, standing at over 6 foot,[14] around 6 and a half feet tall.[15] She has long, blonde hair, with lighter blonde and pink highlights, which is tied into a twice-banded low ponytail. Her blonde bangs flip to her left with a curl.

While appearing humanoid, Charlie does feature animal-like traits such as fangs and red-toed hooves.[16][17] Her lips are black and she has rosy red cheeks, which Vivziepop has mentioned taking inspiration from dolls and marionettes.[18] Her eyes have red irises with light yellow sclera. She has thick black eyelashes and gray eyelids.

Charlie accessorizes with a small black bowtie and black suspenders, with an untucked white, long-sleeved dress-shirt. Over this she usually wears a fitted red tuxedo jacket with dark-red lapels and a pair of red fitted pants. She wears black and white saddle shoes.

Full Demon
When in her full demon form, a pair of dark-reddish horns protrude from her head while her eyes' sclera turn bright red with white irises and slit pupils; above and below her eyes appear black streaks. She also gains a long black tail with spikes and a triangular tip that has a heart in the center.

Charlie is compassionate and empathetic to a fault, feeling genuinely upset at the idea of harm coming to others.

Although she isn't unaware that Hell is populated with souls that have committed egregious acts in their living lives, she still views their yearly extermination as a senseless waste and makes it her personal mission to help them avoid it via self-betterment and eventual redemption, something she is seemingly alone in believing is possible.

Charlie's idealism, while setting her apart from many of her hellborn peers, can also make her naïve to many of the harsh realities that appear to stand in the way of her potential success - something her girlfriend, Vaggie, tries to remind her of, only to be cheerfully ignored in favor of a more blinkered, sunny optimism.

This can also cause her to rush headlong into the initial stages of her plans without much preparation (her prompt list before her big news appearance reading only "unicorn kisses, dolphin high fives, sing showtunes = happy ending?").

Charlie has a love for musical theatre, song and dance, and will often convey her emotions and ideas through showtunes and ballads. She appears to take perceived failures hard, as she believes her heartfelt theatrical passion should be enough to bring people over to her way of thinking, and is disheartened when it's not as simple as she imagines. She openly admits during a dejected voicemail to her mother that she doesn't actually know what she is doing, or how to make her plan for reforming sinners work in practice.

Despite being sweet and lacking 'street-smarts', this doesn't make Charlie a pushover or stupid. When people insult her or openly mock her ideals and plans, she has no hesitation in standing up for herself, or even rolling up her sleeves to physically fight back. She is also not above letting a few cuss words slip.

Charlie also displays some grounding in her idealism, understanding that not all demons can be redeemed, or even likely to change for the better. She displays sensible hesitation when confronted with an ambiguous deal from Alastor, the notorious Radio Demon, refusing the shake his hand and using her status to make demands of him (albeit with some sheepishness).

Demon transformation - Charlie can enter a fearsome, more powerful Demon form.
Pyrokinesis - Charlie is able to summon fire at will while in any form. The pyrotechnics shown during I'm Always Chasing Rainbows were summoned from the palm of her hand. She can later be seen using it again (albeit offscreen) to set Tom Trench on fire during her brawl at 666 News.
Demonic magic - Being the daughter of Lucifer, Charlie can access powerful magic that is exclusive to the higher-ranking demons.
Conjuration - Charlie could summon objects out of thin air, such as her Hazbin Hotel drawings she showed to Adam before he interrupted with Hell is Forever.

Multilingualism - Charlie speaks fluent English and is said to also be able to fluently speak the Demonic languages she grew up learning.
Hand-to-hand combat - As demonstrated in the Hazbin Hotel pilot, Charlie is able to hold her own when in hand-to-hand fighting. She did not hesitate to engage in a round of fisticuffs with antagonistic news caster Katie Killjoy.
Musical talent - Charlie is considered a very talented singer, even outside of the show's non-diegetic musical numbers. She can also play the piano.
Dancing - In addition to her musical abilities, Charlie is also a skilled dancer and a fast-learner, as shown in Alastor's Reprise, wherein she dances perfectly in sync to Alastor's steps. Charlie's personal style of dance is tap-dancing, something she can do very well.