Ghostboy

"Ghostboy" is the ninth episode of the first season of Teen Titans Go!, and the ninth overall episode of the series.

Summary
Beast Boy has been pranking Starfire, Cyborg, Raven, and Robin a lot, so the Titans decide to give Beast Boy a taste of his own medicine and turn him into a fake ghost.

Plot
,Beast Boy fails to prank Robin, Cyborg and Raven, so he realizes that the only one who falls for his pranks is Starfire, the most innocent and gullible of all the Titans. Beast Boy spots Starfire in the garden watering a flower. He prepares to scare her as a gorilla when a mosquito starts bothering Starfire. It bothers her so much that she vaporizes the mosquito, killing it. However, she also accidentally throws a watering can that lands on Beast Boy's head, causing him to have a lump on his head and to say "ow". This makes Starfire believe that Beast Boy was the mosquito, and Beast Boy takes advantage of her thought to make her believe that she had killed him. Starfire then spots Beast Boy in the bushes and thinks that he is a ghost.

Starfire goes to tell the Titans that Beast Boy is a ghost, but Beast Boy stops her and convinces her that she needs to be Beast Boy's servant. He also claims that she cannot tell anyone because that's how ghosts work on Earth (according to him). Starfire cleans all of Beast Boy's dirty clothes, on his orders, when Robin enters the room and asks why Starfire is smelling clothes. Starfire tells him that, on her home planet, smelling them brings you good luck. She proceeds to smell one, causing Robin to leave the room in disgust. The other Titans start to get suspicious, because Beast Boy hasn't tried to do anything to them. Starfire passes right in front of them and falls to the ground. The others tell Starfire that she has been pranked by Beast Boy making her really furious. They all decide to get revenge on Beast Boy.

The next day, Beast Boy wakes up in a coffin, and saw that the other Titans are mourning him. He isn't completely convinced that he is a ghost, but when his hand passes through a solid object, he believes. In reality, Raven had put a spell of transparency on Beast Boy so that he can pass through objects. Beast Boy, believing himself to be invulnerable now, decides to "do what he's always wanted to do" which is: jump into a volcano, forcing the Titans to follow in order to stop him from really becoming a ghost. At the volcano, Cyborg spots a mountain lion, and walks towards it thinking it was Beast Boy. Cyborg becomes a ghost after being brutally mauled by the mountain lion, but that doesn't stop the others from going after Beast Boy. Robin becomes a ghost after plummeting from the cliffs, making him happy for a short time because he finally had superpowers. Raven and Starfire become ghosts after being hit by random lasers falling from the sky. Being all ghosts, they decide to pass through the volcano, when they spot Beast Boy at the top, ready to jump. They confront him, telling him he is not a ghost, and Beast Boy reveals he knew they were fooling him, but he ends up slipping falling into the volcano anyway, rendering all five Titans ghosts. The episode ends with the Titans laughing at Beast Boy until Cyborg asks, "So... what now?"

Characters

 * Beast Boy
 * Starfire
 * Cyborg
 * Robin
 * Raven

Trivia

 * This is the first episode that aired as a single segment, with a rerun of "Legendary Sandwich."
 * Silkie is absent for the third time.
 * It's revealed Beast Boy's life-long dream was to jump in a volcano.
 * Beast Boy could have turned into a bird or any flying animal to avoid falling in the volcano, but he didn't.
 * Oddly, as a ghost, Cyborg still has his mechanical parts.
 * Raven or Starfire could've caught Robin to prevent him from falling to his death, but they didn't.

Continuity

 * This is the second time Cyborg dies and the first time the other Titans die. ("Laundry Day")
 * Beast Boy is seen naked for the second time. ("Laundry Day")
 * Starfire's exclamation of not lying is explored in "Starliar", and Robin gaining superpowers is the plot in "Super Robin."

Errors

 * When Starfire enters the living room and collapses, there are very few items on the ground, but after she rages the ground is littered with the usual items, including the Darkseid Plushie.
 * Even though Raven made Beast Boy intangible, he was still able to touch the coffin.
 * Cyborg refers to the spell as a "transparency spell", when it's actually an intangibilty spell.
 * Raven is able to become a ghost, even though, in "Salty Codgers", she stated that she does not have a soul because she's half demon. However, it is possible she was lying, as Robin successfully traded her soul to the Puppet Wizard in "Puppets, Whaaaaat?".

Running Gags

 * The Titans getting randomly killed, especially by lasers.