Hans

"I've been searching my whole life to find my own place."

- Prince Hans while singing "Love is an Open Door" with Blu, foreshadowing his true intention.

"Hi, Blu. (Blu: Hans? You came to save us?) That's right. (Blu: I need a true love's kiss to free me from Nigel). A true love's kiss. Oh, Blu… If only there was someone out there who loved you. (Blu: What do you mean, Hans?) As thirteenth in line in my own kingdom, I didn't stand a chance. I knew I'd have to marry into the throne somewhere. I realized that being your friend was a terrible mistake. Therefore I am commencing with Operation Soaring Eagle which involves killing you. (Blu: You won't get away with this). Oh... I already have. (chuckles evilly)"

- Hans revealing his true nature to Blu before leaving him and his friends for the dead.

"Hello, Eduardo. (Eduardo: Hans. SON OF A BI-- (pauses)). I haven't seen you since in a long time since your daughter was born. (Eduardo: I fired you, Hans). No, I betrayed you. (Eduardo: I'm here to save my daughter.) He's mine now. I'll kill you first!"

- Hans reuniting with Eduardo for the first time since Jewel's birth.

Hans Baggins is the hidden main antagonist of Rio 3: There and Back Again. He is at first Blu's best friend and Eduardo's partner at the Amazon Power Plant, but at the climax, he is revealed to be Charles Montgomery Burns's henchman and Nigel's mentor.

Trivia

 * Hans is similar to the following villains
 * Chester V from "Cloudy with a Chance of Meatballs 2"
 * Both are former idols/heroes turned true enemies of the protagonist (Blu and Flint Lockwood.)
 * Both of their true villainy is revealed near the end.
 * Both fail to kill the protagonist's loved ones in the last instant just as the protagonist saves them (Hans fails to kill Blu's kids as Blu pushes Blu's kids away, just before Hans' rocket launches, which would have killed the kids; Chester fails to kill Flint's friends as Flint manages to use the button to move them away from food making machine, which would have turned them into food.)
 * Both get their comeuppance (Hans, who has become dizzy, is banished from the Amazon, just before Hans can kill Blu and his friends; Chester is eaten by a giant cheesespider just before he can escape.)
 * Chancellor Kooth from Wizards vs Aliens.
 * Both were originally loyal to a King (Blu and the Nekross King.)
 * Both later betray their King (Hans; to rule the Amazon, Kooth; to become ruler of Nekron.)
 * Both are defeated (Hans is exiled and Kooth is eaten by the Nekross King.)
 * The Emperor from "Star Wars"
 * Both betray the protagonists (Blu and the Jedi.)
 * Both are evil masters, corrupt officials and have villainous henchmen who redeem themselves (Nigel and Darth Vader.)
 * Both have armies backing them up (Puppies and Stormtroopers.)
 * Henry J. Waternoose III from "Monsters. Inc"
 * Both try to hide their villainy.
 * Both have former diabolical henchmen (Randall Boggs and Nigel).
 * Both trap the protagonists (Hans traps Blu in Nigel's basement, with Nigel; Waternoose traps Mike and Sulley in Himalayas).
 * Prince Hans from Frozen.
 * Both were the love interest of the protagonist (Blu and Anna).
 * Both were also considered to be good people.
 * Both later betray the protagonist and leave them for dead (Hans leaves Blu to die in Nigel's basement whilst Hans left Anna to freeze to death).
 * Both later get their comeuppance (Hans is banished whilst Hans is sent back to his homeland to be punished by his brothers).
 * Both have the name Hans.
 * Lola from "Shark Tale".
 * Both were the former love interest of the protagonist (Oscar and Blu).
 * Both are rivals of the protagonist's true love interest (Angie and Jewel).
 * Both formerly worked for the main antagonist (Don Lino and Nigel).
 * Both try to hide there true nature.
 * Both abuse the protagonist a lot.
 * Despite being the main antagonist, he has about 16 minutes of screen time, making Nigel the Heavy of the film.