Nicky

Nicky is the mother of Vicky and Tootie who appeared in the PC version of the game Breakin Da Rules. She has since been retconned from canon and replaced with Vicky's Unnamed Mother.

Character
She looks exactly like Vicky, only she is a kid around the same age as Timmy, as the level featuring her is set in the past. However, she behaves more like Tootie, romantically pursuing Timmy through the stage. This is a direct contradiction to the series itself, where Vicky's mother resembles Tootie and doesn't really act like either of her daughters.

Description
Nicky is almost completely identical to five year old Vicky from "The Switch Glitch", only with slightly different clothing. Oddly, when the player selects her stage on the level select screen, Timmy comments, "That looks like Tootie; I hope I don't regret this!" (This suggests that Nicky's design was actually supposed to resemble Tootie's, but the programmers for some reason designed her to resemble Vicky instead.)

Removal from canon
When Vicky and Tootie's Parents were introduced in the TV special Channel Chasers, this character became redundant. Because she only appeared in a video game, it is likely the writers completely disregarded Nicky intentionally. A similar situation befell Vicky's relative Vic who was originally thought to be her father, but Channel Chasers made it clear he was not.

Fandom
Nicky, or the idea of her, is still used in Fanon by authors who want to make Vicky and Tootie stepsisters of a different mother, but in terms of actual canon there has been nothing to state that the two sisters are anything but full blooded relatives. Though they could even be half-sisters with the same father. This suggests that Vicky's parents are divorced, and his dad remarried, and had Tootie as a result.

Nicky's name may also be used to simply refer to Vicky's actual mother that appears on the show. Since they both have similar eye color, its possible though unlikely that they are the same character.