Flashback

"Flashback" is the forty-eighth and forty-ninth episode of the fourth season of Teen Titans Go! and the two-hundred-fifth and two-hundred-sixth overall episodes of the series.

Summary
Part 1: A flashback reveals how Robin formed the Teen Titans.

Part 2: A flashback reveals how Robin changed from mild-mannered sidekick to quick-tempered leader.

Plot
TBA

Characters

 * Robin
 * Cyborg/Fleshy Guy
 * Starfire
 * Raven
 * Beast Boy
 * Kid Flash
 * Speedy
 * Aqualad
 * Bumblebee
 * Trigon (cameo)
 * Mammoth
 * Cinderblock (cameo)
 * Plasmus (cameo)
 * Monsieur Mallah (cameo)
 * Batman
 * Commissioner Gordon (cameo)
 * Mr. Freeze (cameo)
 * Black Cat (cameo)
 * Justice League (cameo as puzzle)

Trivia

 * This is the seventh half-hour special of the series. The previous ones were "Two Parter", "Operation Dude Rescue", "The Streak", "BBRAE", "Justice League's Next Top Talent Idol Star" and "The Self-Indulgent 200th Episode Spectacular!".
 * This episode marks Speedy's first speaking appearance since his debut in "The Date".
 * Even though three more episodes of the fourth season premieres after, this episode was the last to be produced in the season, which means it is basically the season finale.
 * At the end of the episode, the Octopus is seen with a hat and suitcase putting up a sign that reads, "ROCK FOR RENT," before it leaves the rock in front of the Tower. This means that this is indead the end of the season and that another animal will replace the octopus in the next one.

Continuity

 * Cyborg's "Fleshy Guy" persona from "Real Boy Adventures" is seen again for the second time in the series.
 * Cyborg's origin story in this episode contradicts the telling of his origin story in previous episodes. Rather than receiving the robot parts from his father, the Titans take an injured Victor Stone to the hospital to get emergency treatment from doctors.
 * This episode contradicts how the Titans first met as shown in the episode, " Baby Hands ".
 * In the opening, Starfire and Cyborg are together engaged in juvenile shenanigans, much like in past episodes such as "Hose Water", "Shrimps and Prime Rib", and "Booby Trap House".
 * This isn't the first episode where Starfire was shown to have an appetite for cats. In "The True Meaning of Christmas", Starfire cuddled a gingerbread cat before eating it.
 * ALF and his cat-eating tendencies was first mentioned in "Oil Drums" by Robin.
 * Kid Flash does the Pee Pee Dance while waiting for his turn in the bathroom.
 * Robin once again breaks Kid Flash's leg, like in "Multiple Trick Pony" and "The Streak".
 * One of the couples from "BBRAE" are seen at the beginning of the first part of this episode.
 * The Justice League image on the puzzle is the same image used on a poster seen in "Justice League's Next Top Talent Idol Star", except it has a different background color.

Errors

 * Even though Victor Stone is a trained athlete, he tired himself out after running a few feet during speed trials.
 * Robin wears his classic Robin uniform in this episode which resembles the Silver Age Robin that made an appearance in "The Best Robin" which is the biggest error of them all.

Running Gags

 * The Titans making Robin lose his cool in the flashback, causing him to lose his temper.
 * Starfire trying to eat cats.
 * Robin refusing to give Victor Stone a flyer since he's not a superhero.