Two Parter

"Two Parter" is the 17th episode of the third season of Teen Titans Go!, and the 121st overall episode of the series.

This episode is the first half-hour episode of the series.

Summary
In "Part One," the Titans visit the Hall of Justice to use the pool, but then decide to check out the inside. In "Part Two," the Titans must save the members of the Justice League from the clutches of the supervillain Darkseid.

Plot
Part One:

The episode begins with Robin expressing that he thinks that today will be special. Beast Boy asks how its going to be special. Robin replies that it is special because something  will happen that will take twice as long as it usually would, thus, it is special. He then states that a special event will take place that will result in an epic adventure. The Titans wonder when exactly this "special" event will take place, and Robin tells them to keep waiting. Shortly after, the air conditioning breaks down, which Robin declares is special (although apparently it had already broken a while ago). Robin thinks that this broken air condtioner will launch them into an exciting adventure divided into two parts. The Titans find that they are feeling hot, at which point Robin takes them to a pool, which they do not find special at all. Cyborg then cannonballs into the pool, knocking it dry. Robin then suggest that they go to the Hall of Justice, at which point he once again declares that this will be special (causing the other Titans to ask him to stop saying "special"). The Titans arrive at the Hall of Justice and begin swimming in the pool, except for Cyborg, who is worried about the Justice League catching them in their pool. He then reveals his wish to one day join the Justice League, causing the other Titans to state that they would also like to join the Justice League. Since it is such a special day, Robin then offers to introduce Cyborg to the Justice League, to which Cyborg protests. However, they find that no one is home, at which point Robin offers to give the Titans a tour (as the Justice League left a key there for some reason.) Robin notes that they are filling lots of time, which is special. They then look in the fridge, where they find Batman's sandwich, which they eat despite Robin's objections. The sandwich set off an alarm, at which point a security robot finds them and informs them that the area is restricted to Justice League members, and that intruders will be detained. The Titans evade the robot and Robin suggests that they dress as the Justice League to fool the robot. The Titans then fight over the Batman costume, but upon finding that it smells, leave the role to Robin. The other Titans then suit up: Beast Boy as Martian Manhunter, Raven as Wonder Woman, Starfire as the Flash, and Cyborg as Green Lantern. The Titans manage to fool the robot in their disguises until the robot asks exactly which Green Lantern Cyborg is. As he doesn't know, the robot again believes they are intruders an attacks them. However, they are rescued by the Golden Girls (created by Cyborg's ring), and come out triumphant. Robin declares that he told them it was a special event. However, the Titans find out that the Justice League has been captured by Darkseid, meaning that there will be another part to the adventure. Robin once again declares that it is special.

Part Two:

The second part of this episode picks up right where the first part left off, with the Titans standing around the Justice League's computer monitor. Robin explains to the Titans that Darkseid (not THE Dark side) is the most dangerous villain in the universe, powerful enough to defeat any hero that faces him. The Titans agree to travel to the planet Apokolips to rescue the Justice League from his evil clutches. Cyborg insists that they remain wearing the Justice League's costumes, to honor the heroes that they aspire to be like.

Characters

 * Cyborg
 * Robin
 * Starfire
 * Raven
 * Beast Boy
 * Darkseid (episode debut)
 * Batman (cameo in tank)
 * Superman (cameo in tank)
 * Wonder Woman (cameo in tank)
 * Martian Manhunter (cameo in tank)
 * The Flash (cameo in tank)
 * Green Lantern (mentioned)

Trivia

 * Cyborg has claimed to have dreamed of joining the Justice League.
 * This half-hour episode aired almost a year after "Thanksgiving".
 * This is the very first half-hour special of the series.
 * Also, it was aired before the world premiere of Regular Show The Movie.
 * This is the second time the Justice League is mentioned in the show. The first being mentioned in "Some of Their Parts".
 * In this episode, Raven is seen without her hood for the longest time.
 * Each of the Titan's new outfits share some relation to their own abilities: Robin wears Batman's costume due to being his protege, Starfire wears The Flash's costume due to her lightning-fast speed, Cyborg wears Green Lantern's costume due to his unwavering willpower (and possibly skin color), Raven wears Wonder Woman's costume due to her mythical origins, and Beast Boy wears Martian Manhunter's costume due to his green skin and shape-shifting powers.
 * This is the second time Starfire is seen wearing her swimsuit. The first being in "Real Magic". She wears a purple strapless tube top with a matching purple bikini bottom.
 * Although it appeared that Superman "died" when he fell into Darkseid's lava pool, he should have been able to survive, unless his tank was filled with Kryptonite. Similarly, Superman should not have died when the tanks exploded, unless Kryptonite was a factor.
 * This episode was released a day earlier than usual. This is due to the day afterwards being Thanksgiving.
 * This episode shows that Cyborg has the ability to fly around a planet fast enough to reverse time.

Continuity

 * Raven is seen unhooded for the thirtieth time.
 * The second time Beast Boy wears a Martian Manhunter costume since "Halloween".
 * The Titans refer back to how hard it was to keep a broken air conditioner plot going for eleven minutes, which is why this plot was dropped so quickly at the beginning of "Hey Pizza!".
 * Cyborg's extensive knowledge of the Justice League's abilities and utilities holds true in nearly every franchise of DC Comics.
 * With Starfire as The Flash, her hair is once again fixed into one ponytail. (Starfire the Terrible, Sidekick, Hey You, Don't Forget about Me in Your Memory)
 * Although his death is later prevented, this is the second time Batman has died, assuming he was killed in "Thanksgiving" (although his death was never confirmed).
 * This is the second time Robin and Cyborg both get older ("More of the Same")
 * When Raven asked the that how it "knew" that Raven was Wonder Woman, the robot answered "Dem Legs" which is continuing stuff from Legs and Leg Day.
 * This is the second time The Golden Girls was referenced. (Oil Drums)

Running Gags

 * Robin kept saying "special".
 * Robin saying "He's Batman!"
 * The Justice League fell into a lava and exploded.
 * Cyborg spins planet Apokolips by turning back time.
 * Cyborg uses The Golden Girls as a weapon with his ring.

Errors

 * Raven is seen wearing an actual bathing suit to go swimming in the Justice League's pool, which is a black strapless one-piece, which contrasts against how in "Hey Pizza!", she mentioned that she wears her cloak as her bathing suit. Though she could've been joking.
 * In 20 years, Robin is still seen in his costume instead of his Nightwing costume.