Gigi is an actress, and as such, does not battle. Instead, she, like White, relies on the help of others like Black and his Pokémon to help her when she is in trouble. However, unbeknownst to White, Gigi is actually a strong Pokémon but never gets a chance to show her true strength because of her duties as an actress.
In addition, Gigi seems to get along with Black's Tep fairly easily as the seen are almost never seen apart.
Gigi first appears as one of the Tepig White was supposed to bring to an Xtransceiver commercial shooting. Due to a mix-up, White accidentally only brings one Tepig instead of the two she was supposed to bring. After Black disrupts the shooting with his yelling, his male Tepig, Tep, notices Gigi in her Poké Ball and releases her. The two quickly befriend and start playing with one another.
White, realizing that since his male Tepig is the Pokémon that she is looking for, hires Black after he accidentally puts the company in debt after rescuing them from an attacking Galvantula. Due to her being an actress, Gigi is never seen in battle and is usually seen being protected by Tep, similar to how White is protected by Black.
In Nimbasa City, Gigi is seen performing in the Pokémon Musical that was invented and set up by White. Later, Gigi and White are confronted by N, who knocks and traps White into the Nimbasa Ferris wheel in order to talk to her. After confronting her about the problems with the musical, he has his Servine attack Gigi. Gigi manages to free herself and N comes to the conclusion that White had been neglecting her true strengths in battle, a fact that Gigi agrees to.
When White decides that it is time to escape, she attempts to jump off the Ferris wheel and asks Gigi to do the same. Surprisingly, White is shocked to see Gigi going to N's side instead and falls hard to the ground below and N and Gigi look from above.
