Teen Titans (2003)

X - S3-E2

Trivia: The warehouse in which the Titans combat the new Red X is actually the same warehouse which housed the disco party in "Sisters", right down to the SOTO (after series co-director Alex Soto) neon sign.

X - S3-E2

Trivia: When Robin and Red X jump to the attack against Dr. Chang's henchmen, a white dove passes across the screen. The white dove passing by is the trademark of film director John Woo, stemming from an idea he had for his film The Killer.

Revolution - S3-E7

Trivia: Many greetings from the famous English comedian troupe Monty Python can be found in this episode, particularly the city background: The black and white cutouts were a staple element of the MP cartoon sketches.

X - S3-E2

Trivia: One of Beast Boy's possible choices for Red X's identity is "part of a clone army". If you stop at the right time, you can indeed see Robin wearing a Star Wars clone trooper armor suit (sans helmet).

Spellbound - S3-E6

Trivia: Robin's line "Kardiak, you're under arrest!" is of course a word pun on the medical term "cardiac arrest". And given that Kardiak is a giant heart - enough said.

X - S3-E2

Trivia: Red X pulls on Robin's mask, which pulls the flesh and skin around his eyes along with it as if it was glued on, and lets it snap back into place. In the comics, Dick Grayson (at least as Nightwing) indeed uses an adhesive named spirit gum to keep the mask on his face.

The Beast Within - S3-E9

Trivia: When Beast Boy flips through the channels, we can catch a short glimpse of a car company advertisement which uses Adonis' logo; and if you look closely, you can see that several parts of the car on offer match parts on Adonis' battlesuit. My guess is that Adonis must have some connection to the car manufacturer in question and uses the production facilities and spare car parts to build his armor.