Pure Protein

Pure Protein is the 42nd episode in the third season of Teen Titans Go! and is the 146th overall episode of the series.

Summary
The Titans hold a team competition but have to avoid an alien hunter.

Plot
Beast Boy and Cyborg are out playing some beach volleyball, Raven is molding a few sandcastles, and Starfire is enjoying wiggling the sand between her toes.

The fun in the sun suddenly stops when Robin stomps one of Raven's sculptures. Asking what they're doing, Cyborg responds that they're just island living. Robin reminds them of how dangerous it is, just as Sticky Joe gives them a "howdy!" off shore on a float.

Starfire remarks that the only danger is having too much fun, and Beast Boy chimes in that he needs to just melt his cares away. Robin refuses, kicking Beastie's volleyball out into the ocean. Some how, the ball sprouts a face and tears up. Beast Boy woefully calls out, and the two start crying.

Robin says that survival is the main priority, not fun. He proposes challenges to help them with their skills, but Raven objects, as challenges are "challenging".

Robin says to break into groups, but Starfire points out they are a team. Cyborg starts getting into a teamwork speech, but Robin interrupts, saying they don't need that cheesy niceness, but divided teams instead. Beast Boy says they all need to help each other, and Robin agrees- in separate teams. He puts emphasis on backstabbing, and when he keeps fake stabbing them in the back Cyborg shoves him away, and makes sure he isn't on his team.

The others agree, but Robin nominates himself as the host, with Team 1 consisting of Cyborg and Starfire, and Team 2 composed of Beast Boy and Raven. Beast Boy gets comfortable with this, but Raven responds by smashing his head with her demonic fist.

Batman and Joker totems announce the Island Survival challenges. But first, Robin stages a confession with Raven on a couple of rocks. Robin says to pretend he's not there, but the two just sit their awkwardly until Raven leaves. For Starfire's confession, Robin tries to push her emotions and feeling about him, but she resorts to passing. With Cyborg's intervention, he completely breaks down about taking Beast Boy's super fresh glasses, but at least he feels better after.

The first challenge consists of finding food. Beast Boy has already ordered pizza, but Robin simply kicks the Pizza Deliverer canoe away. Once again, Beast Boy is heartbroken, and the two have an emotionally trying moment. Robin explains that survival means eating gross things, not pizza.

For Island Food, he escorts the four of them to trays of grubs, beetles, and worms. All of them gag at the bugs as Robin states that the first team to eat their share wins. Star declines, but the Boy Wonder gives her a lecture on bugs being excellent sources of protein and fiber.

He catches a whiff of Beast Boy's coconut curry though, and grows angry when Starfire sips down the yummy goodness. He uses the spoon to catapult the wooden pot out across the sea, and Beast Boy again sobs with his seemingly alive dish.

Robin says that bugs are real survival, and starts munching on them, eating maggots and grasshoppers in a refined manner. It's pure protein he says, with bugs crawling around his face. In Beast Boy's (transformed into a bee) confession, he declines from eating the beautiful creatures. he also comments on Robin's bad-smelling burp.

Robin's next challenge is Island Wear, in which they must make clothes from their surroundings. Raven points out they have clothes already, which leads to Robin maniacally burning their attire and bodies to a crisp with a flamethrower.

Robin orders them to get leaves and cover their shame, but Cyborg has a brilliant idea: make it an Island Fashion Show! Starfire struts out on the bamboo boardwalk, showing off her pirate flag dress, Beast Boy poses in his shell bikini and mermaid outfit, and Raven sports her palm poncho, all while Cyborg plays them up, taking pictures.

Furious, Robin resorts to a self-demonstration of nakedness. Raven begs him not to, but he strips down, and it's just a bright flash of light. Starfire says he needs to watch his pasty skin, which is already burning, so Robin does a sort of snow angel in a mud pile, nature's sunscreen. He rejoices when chivalrous leeches with top hats suck his blood free of toxins, and he welcomes the mosquitoes, aka the supper buffet, that are attracted to his blood. After he's done sucking up and chewing the bugs, Cyborg protests any confession until Robin is decent. But Robin just plays it cool, much to the hero's horror.

Gathered around a campfire, the Titans are ready for the 3rd challenge, and Island Meeting. The group reaches a unanimous cote to throw Robin off the island, but he claims the results are tampered and messed up... onto the next challenge!

But Cyborg and Beast Boy object saying that their survival is already mastered. Flabbergasted, Robin asks really. When they all agree, he skips to the final challenge. Using his communicator to call in Alien Skull Collector, who's task is to stalk them and salvage their heads. Cyborg yells that he's crazy, and from a cave a few meters away, growling noises can be heard and red eyes shine. Infrared eyesight zeroes in on the robotic hero's skull, and four scarlet beams appear on his chest plate. At first, Beastie's excited about the laser light show, but when Cyborg's arm is blown off and wriggles about, they all scram. Cyborg temporarily forgets his appendage, but backtracks quickly to retrieve it.

The monster reveals his gray and red, armor clad body, armed with a huge ray gun. His infrared capabilities come in handy again when he tracks the fleeing Titans cramped behind some foliage and rocks. Blowing up their cover, the Titans try to slip away on vines, but they're severed by Alien Skull Collector's forearm fired ninja stars. The branch they land on is exploded, and eventually, the Titans are able to evade the laser beams by falling down a waterfall. Thinking they are dead, the alien gives up the chase.

Once they regain consciousness, Raven says they're doomed, and Cyborg grows insecure about his precious skull. Robin starts to go on about the one method of survival, but when Starfire interrupts with teamwork talk, he grows angry, saying it's every man for him/her self. His plan is to let the others be picked off one by one until only he is left.

When Raven and Beasty Boy chip in about using the survival skills they've learned throughout the day, but Robin ditches the crew, screaming. The alien returns again, aiming his blaster. But Cyborg convinces him to try coconut curry before killing them.

Alien Skull Collector takes off his mask to reveal his red flylike face, and, sipping the curry, he is delighted. Beast Boy compliments his sweet gear, adding a leaf cape, and Starfire says it compliments his mandibles. Raven then gets them into survival the "island style".

Back at the beach, Alien Skull Collector and Beast Boy are playing bolleyball with Cyborg looking on. When the alien pops the ball with razor spines, they all let out a hearty laugh (even though Beastie cried earlier about his beach ball. Contradiction ALERT!). Raven is building castles again when she catches eye of Alien Skull Collector's sand skull fortress, and he's obviously proud. Starfire also relaxes with the outer space creature, both giggling with the sand between their toes.

After performing a survival pose, it's time for Alien Skull Collector to leave. His purple, spiked ship is parked on the beach, and Raven asks if he really has to go. He's a pretty cool dude. Starfire says he'll always be dear to their hearts, and Cyborg and the alien exchange a fiery handshake. Beast Boy gives him some curry for the road, which he sloppily drinks. After boarding the ramp, Alien Skull Collector looks back with warmth in his eyes once more, waving goodbye.

The others wave, and then he heads off. Cyborg says he'll miss him... but whatever happened to Robin?

Above Earth's atmosphere, Alien Skull Collector walks the his red lit spaceship, filled to the brim with various animal skulls. Robin's decapitated skull, which apparently has skeletal hair, is placed on a special stand, a real valuable collector's piece.

Characters

 * Robin
 * Beast Boy
 * Raven
 * Starfire
 * Cyborg
 * Sticky Joe (cameo)
 * Pizza Delivery Boy (cameo)
 * Alien Skull Collector (debut)

Songs

 * Five Whole Days (opening theme)

Trivia

 * This episode is the second part of the week long summer event of "Island Adventures".
 * At the end of the episode, it is revealed the Alien Skull Collector murdered Robin.
 * The Bamboo Titans Tower from the first Island Adventures episode, "Coconut Cream Pie", is not seen in this episode.

Continuity

 * The title refers to a recurring joke in "Nature", where Robin ate butterflies as he claimed they consisted of pure protein.
 * The second time Robin is using a flame thrower. The first was "Croissant".
 * Raven is seen unhooded for the 42nd time in this series.

Errors

 * TBA

Running Gags

 * Beast Boy getting upset when Robin throws away his desires.
 * Robin forcing the other Titans to participate in Island Survival activities.
 * The other Titans dismissing Robin for his bossy behavior.
 * Robin says "pure protein" when he ate the insects.