Tanya is the main villainess from the episode Spies vs Spy (S01 E09) of the syndicated action-adventure series She Spies.
She was original (and at that time, only) member of the She Spies programme who was recruited by Jack Wilde to be a part of a clandestine Federal agency set out to rid the world of high-level threats. A former criminal, she was given a chance at eventual freedom if she helped the government. Things were going great and she excelled in the scheme, which led to her and Jack becoming close and starting a secret romantic relationship.
During rigorous training in the programme, her personality started to become more aggressive and her mental state started to worsen. When she went too far, Jack was forced to end their relationship and let her go. Instead of going back to prison, Tanya fled and went into hiding.
Years later, she returned to seek her revenge, by orchestrating a fake plan to assassinate the daughter of a powerful politician who was set to get married soon, only to lure out Jack and his team. The day before the wedding, Tanya created a disguise and infiltrated the event. She first encountered Shane and planted a bomb on her, but not before haring her self-worth with harsh words. She then set her sights on Cassie and disguised herself as a maid.
Tanya knocked Cassie to the ground, also knocking her confidence before throwing a large bookcase on-top of her. Next, it was D.D.'s turn and Tanya broke into the surveillance van and put her in a headlock before convincing D.D. that she was the "weakest She Spy". Jack came clean to the girls about everything, his affair with Tanya and why she is out to get them. They set a trap for Tanya, who thinks she is one step ahead of them.
She intercepts Jack and takes him to his office. She asks him why he abandoned her and holds a gun up to him. Cassie, D.D. and Shane arrive, much to her surprise and attempts to stop Tanya. Cassie chooses to take on Tanya by herself, and they fight it out in a huge brawl - with the winner Cassie knocking her out. Tanya is then taken into custody.