Dee Dee's Rival (Dexter's Laboratory)

"Dee Dee's Rival" is the first part of the thirty-fifth episode in the second season of Dexter's Laboratory.

Plot
Mandark's sister Olga Astronomonov (aka Lalavava) tries to upstage Dee Dee at dance school.

Why It Rocks

 * 1) It serves as a great spin-off to the season 1 episode, "Dexter's Rival", due to the title card looking similar to said episode, the same music playing when Dee Dee was getting ready for a recital at ballet school, and her rival (who is called Olga Astronomonov, or "Lalavava") - and we can tell that she's Mandark's sibling due to her voice sounding similar along with her surname & personality.
 * 2) Speaking of which, Lalavava's dance moves are top-notch and cool to watch, along with Dee Dee's moves.
 * 3) * The moves they do at the big ballet dance are also nice despite destroying the stage.
 * 4) The robot suit Dee Dee uses for the big ballet dance looks very cool and has impressive features, along with Lalavava's one (which looks very identical).
 * 5) Watching Dee Dee and Lalavava perform at the ballet dance was nice and impressive, even if they destroyed most of the stage.
 * 6) Decent Ending: After performing their ballet moves using Dexter & Mandark's robot suits, Dee Dee and Lalavava decide to go to the mall.

Reception

 * It holds a rating of 7.2/10 on IMDB.