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Name: Lillian

Species: Mutant Mermaid Shapeshifter

Nicknames: Lily (Only her sister, her friends and Raph call her Lily)

Status: Alive

Age: 15-23

Crush: Raph (Boyfriend in Tmnt 2003 Season 1-6 later Fiancé later Husband)

Friends: Tmnt 2003 Allies

Enemies: Tmnt 2003 Enemies

Family: Michelle (Best Friend and Adoptive Sister), Donnie, Mikey and Leo (Brother in Laws), Master Splinter (Father Figure and Father in Law), Isabella (Daughter), Max and Violet (Future Twin Niece and Nephew)

Appearance: Long blue hair with light red hair streaks in low pigtails, light green color eyes and wears a light blue short sleeve shirt, navy blue jeans, white socks, light red tennis shoes, royal blue and light red ear cuffs, royal blue and mint green striped armwarmers, a light blue crystal pendant, a light red satchel and a light red zip-up hoodie.

Mermaid Kunoichi: Has her long blue hair in a braid and wears Cure Beauty's outfit from Smile PreCure, light blue and silver earcuffs, a light blue crystal pendant, a light red satchel and sometimes wears a gray cloak.

Future Armor: Has her long blue hair in a low ponytail and wears Jinx's outfit from League of Legends Arcane, grey earcuffs, a light blue crystal pendant and a light red satchel.

Her evil self in Tmnt 2003 Season 6 sounds like Daniella Monet, has long silver hair in a french braid, wears a black and navy blue sundress, black ballet slippers. black and royal blue lace fingerless gloves, black rose earrings and a royal blue crystal pendant and her weapons are white tessens.

Others: When she's in water she turns into a mermaid and when she's on land she turns back into a human. Her powers are siren scream, ice and water powers.

Sounds like Avril Lavigne