Ladyella

A name format based on the fairytale "Cinderella", where the eponymous character is given a Portmanteau nickname of "Cinder+Ella". Recently "X+Ella" has been a popular way to name some characters. This seems to be even more common for comic books, but it's not particular to them.

It should be noted the the suffix "-ella" is one form of a Latin dimunitive ending; coincidentally, another form is found in another name you might find on TV Tropes -- Caligula.

Examples:

Again, name comes from "Cinderella", although it was meant to be something cruel and demeaning, to remark on how she would get covered in ashes as a servant.
- Emberella from Witches Abroad is a direct parody.
Barbarella
Vampirella
Stripperella
Tsunderella
The Non Adventures of Wonderella has several such named characters.
When Leela gets superpowers in Futurama, she calls herself "Clobberella".

Clobberella beats you up, Clobberella beats you up. Who does she beat up? You!

Goombella from Paper Mario the Thousand Year Door
The Simpsons version of Elvira, Booberella.
In Fraggle Rock, Doc's friend Ned Schimmelfinney's cat (and Sprocket's nemesis) is named "Fluffenella."
In Penny and Aggie, after the two become friends, Penny often calls Aggie by affectionate nicknames related to her Granola Girl nature. One of these is "Bead-ella."