Seako
(Quick OOC note: CHARACTER NOT ALWAYS IN DIAPER there that should cover the diaper fearing players...but without diaper she is naked.)
Seako grew up in a home without a father and had a nudist mother. She was never potty trained and so goes around most days in a diaper to keep from spoiling the streets.
Seako is also very well known for taking a friend or girlfriend, eating them, and depositing the remains in her diaper (Fatality or digestion not necessary, and as they aren't necessary neither is scat or watersports. She can do safe vore as well.)
Her breasts have grown from all the girls she's taken straight into them, but they aren't very efficient and 99% of a girl's mass just seems to disappear. The other 1% is split between milk and breast fat. When she started her breasts were not developed at all...so that's a lot of girls.
Her tail and hair also grow, but more drastically. When anal voring, the prey is added solely to the tail and will make it grow an inch. The hair on her head for some reason grows an inch every time she has had sex...even if there was no hair pulling involved. (Not that that causes hairgrowth naturally)
She does love to add girls to her diaper, but she's not mean about it unless it's to tease you. She'll take any diapers she fills home and will use a mysterious device she have available to reform her prey.
Seako will be prey as well and it's not that hard to get her, but she'll always reform.