Tara & Kara

right|300px Tara & Kara: Vexica's nieces, two idiotic troublemakers. In the final episodes, they turned out to be faking part of their idiocy and were more evil than they appeared, assisting Vexica in her grand scheme and happily attempting to wipe out the SPD Base. However, in the last episode Vexica tries to eliminate them, so they turn on her and assist SPD cadets; at the series' end, they join the SPD Academy. Tara & Kara were played by real-life identical twins, Megan and Alexis Stier. Alexis Stier played Ellie Richardson in Power Rangers: Galactic. They did a split-screen for Alexis so she can portray identical twin Kara and fraternal twin Ellie.
Tara: Megan Stier
Kara: Alexis Stier (She also portrayed Ellie Richardson in Power Rangers: Galactic. Ellie has a twin brother)