Teen Titans season 2

Starfire is trying to commemorate the Tamaranian holiday Blorthog, a festival of friendship, but is disheartened at the team's constant bickering. When Warp, a villain from the future, comes back in time to steal an antique, Starfire follows as he jumps through time. She arrives twenty years into the future and finds that the team has disbanded since her disappearance; they are each now alone and unhappy. The adult Titans rally together to defeat Warp and help Starfire return to her time. Upon her return, the Titans become determined to change their future fate and celebrate Blorthog with her.

A lonely Beast Boy goes into the city as a green dog when the rest of the team is too busy for him. He gets captured by the alien Soto, who believes him to be his original dog. The other Titans notice Beast Boy has gone missing and end up chasing Soto's dog, believing it is their teammate.

The Titans meet

When Cyborg beats Atlas, a robot, in an online video game, he challenges Cyborg to a real, physical fight. Due to the limits on his strength, Cyborg loses. Atlas kidnaps the rest of the Titans as his prize and challenges Cyborg to a rematch where his friends are at stake. Cyborg eventually surpasses his own limits and beats Atlas.

After defeating Control Freak, the Titans watch a horror movie at home. The movie scares all of them but Raven insists she does not get scared. They're later awakened in the night to find the Tower under siege by monsters from the movie while Raven inexplicably loses her powers. One by one, they're taken out until Raven is left. Despite repeatedly denying her fear, she realizes she truly is scared and rises to fight back, regaining her powers and defeating the monsters. She awakens to find the Titans safe and learns that she caused the monsters to appear due to repressing her fear.

A villain named Killer Moth breeds an army of insects and unleashes them on the town. However, he promises not to destroy the city if Robin takes his daughter Kitten to her junior prom. Cyborg, Raven and Beast Boy scope out Killer Moth's lair, while a jealous Starfire attends the prom to stay close to Robin.

Note: This episode aired before "Transformation", but Starfire still shoots green

Starfire starts undergoing strange physical changes such as hairy feet and scale-like skin. Believing she is turning into a monster, she flees, fearing rejection from her friends, and takes refuge on another planet. She meets a kind alien who explains that she is merely going through puberty as a Tamaranian and will become encased in a chrysalis. The alien turns out to be a Cironielian Chrysalis Eater. The Titans rescue Starfire, who emerges from the chrysalis as her normal self albeit with a new ability.

Note: Here, Starfire develops the ability to emit bright green

Terra returns and says she is ready to join the Teen Titans, having mastered her powers while she's been away. The others aren't so sure so they decide to let her prove herself. Slade attacks the Titans Tower with wormlike robots. Terra and Raven work together to save the Tower; as a result, the Titans accept her into the team, as she has earned their trust.

Robin, Beast Boy, and Cyborg are summoned by the Master of Games to compete in a "Tournament of Champions" against other superheroes such as Speedy and Aqualad. Cyborg becomes suspicious when the losing contestants vanish. Robin wins the tournament but discovers that the Master of Games is absorbing everyone's powers; he then fights the Master and frees his friends.

Terra and Beast Boy go out on a date while the tower is under siege by Slade's minions. Slade then shows Beast Boy where Terra's loyalties lie, leaving Beast Boy and the Titans feeling betrayed.

Robin is bothered by Larry, his double from a different dimension, who appears after Robin breaks his arm. Robin accidentally breaks Larry's magical finger, causing reality to become distorted. Villain Johnny Rancid takes advantage of the chaos and transforms into a darker version of himself.