Handicapped Badass: Merlyn shoots Green Arrow through the leg with one of his arrows, causing him to spend over half the short with a makeshift bandage, and lowered mobility. In spite of this, he does very well under the circumstances.
In the Hood: He doesn't wear it, but Green Arrow does have a hood as a part of his costume.
Official Couple: Green Arrow and Black Canary. Ollie actually proposes to her at the end, and she accepts.
Royal Brat: Averted with Perdita. Throughout the entire short she was brave, calm, helpful, and serious.
Royals Who Actually Do Something: Princess Perdita keeps her head during the assassination attempt, and even applies a field bandage to Green Arrow when he's wounded by one of Merlyn's arrows.
Shipper on Deck: From Perdita's encouragement to Black Canary to say "yes" to Green Arrow's proposal, it appears that she ships the two.
Shoot the Bullet: Green Arrow and Merlyn shoot simultaneous shots at each other. Green Arrow's arrow shatters Merlyn's, cuts his bowstring, slices his cheek and hits the wall behind him and releases a cloud of knockout gas.
Shoot The Fuel Tank: Merlyn tries to kill Green Arrow by firing a flaming arrow into a fuel tanker.
Green Arrow(after narrowly dodging a coasting plane): That dragon almost got us. Perdita: You do realize that I'm ten and do not require fairy-tale metaphors? Green Arrow: Sorry, it's my first time rescuing royalty. Perdita: It is quite a forgivable sin... Robin Hood.
Stealth Pun: Ollie drives a hybrid. As in, a green car.
Would Hurt a Child: Count Vertigo, Perdita's uncle, orchestrated the assassination attempt, because if she dies, then he gets the kingdom. Vertigo was even going to kill her, with his own hands, at the climax. He is stopped thanks to Black Canary.