The characters from Young Justice are bonafide heroes. Strong, agile, experienced, and resourceful, they face danger regularly and always manage to come out on top. Indeed, this group of gifted individuals included martian telepaths, world-renowned acrobats, expert deadeyes, and a couple of super boys.
If for some reason, this lot would find themselves inside a Hunger Games arena, the spectacle would be so intense that the Capitol would probably die of excitement. After all, the Team is highly experienced, having already faced the League of Shadows and even Granny Goodness. The Hunger Games would be a walk in the park for most them.
Geo-Force
Geo-Force's powers make him a considerable threat in the arena. He has the ability to generate, control, and manipulate lava; he can even cover himself in it, creating a makeshift lava armor that protects him from heavy blows and sharp weapons.
However, Geo-Force is the least experienced member of the Outsiders. He also has anger management issues that often get the best of him. It would be very easy to manipulate him by appealing to his worst instincts. He would then become a sitting duck for any given enemy, who would take advantage of his vulnerabilities.
Forager
Kind and unassuming, Forager would hate to be inside the arena. This gentle bug from New Genesis is loyal to a fault, always looking out for his "hive." As such, he would outright refuse to attack Geo-Force or Halo and would probably also have trouble hurting any of his fellow competitors.
Forager's attacks aren't the strongest, so he would have a tough time going against the Team's more experienced members. He could shed his skin and pretend to be dead, hiding until the competition ends. However, there's more than one detective in that arena, and they wouldn't have trouble finding him.
Miss Martian
As one of the original members of the Team, Miss Martian has experience to spare. She also has a wide array of abilities that make her a threat on the battlefield, including shapeshifting, telepathy, camouflage, and the Martian ability of density shifting.
Miss Martian is so strong that she could easily win the whole thing. However, her vulnerability to fire puts her at a severe disadvantage compared to her fellow tributes. Geo-Force's lava is strong enough to weaken her, and the Gamemakers would be after her as soon as she stepped foot in that arena. With so many enemies hunting her, she would eventually fall.
Superboy
Superboy falls short of having the Man of Steel's full powerset as a half-Kryptonian and half-human clone. However, he does possess the same temper and can be just as (or even more) fearsome and mean than Superman. Superboy has super strength, resistance, durability, and invulnerability.
For all intents and purposes, Superboy could win the Hunger Games without breaking a sweat. However, he has one crucial vulnerability that could render him useless. Artemis could have Kryptonite arrows, and Nightwing and Robin could borrow Batman's Kryptonite ring. Once the Gamemakers discovered Superboy's one flaw, they would also use it against him.
Robin
Tim Drake might not be the best Robin when it comes to fighting ability, but he is the best detective out of the bunch. Analytical and pragmatic, Tim shares plenty of qualities with his mentor, Batman. He's also a skilled leader and a master at stealth and camouflage.
Robin's abilities would only take him so far; at the end of the day, he still has much to learn. Once Miss Martian and Superboy's weaknesses took them out of the Games, Robin would become the primary target for the remaining tributes and the Gamemakers.
Arsenal
The real Roy Harper has one of the most traumatic backstories in Young Justice. Having spent eight years frozen, Roy also has a quick temper and is more prone to violence than any other hero in the show. Thanks to his cybernetic arms, Roy would be a significant threat in the Games. He would also have considerably less trouble killing any of the other members of the Team.
Still, Roy lacks the same experience as the more senior members of the Team. And while he is more than capable of reaching the latter half of the Games, he wouldn't quite make it to the end.
Tigress
The second of Green Arrow's apprentices in the arena would be Artemis Crock, AKA Tigress. She is one of the most experienced and hardened members of the Team and a master archer. She's one of the best hand-to-hand combatants in the show, having been trained by her father, the villain Sportsmaster, and Oliver Queen.
Tigress would have no problem reaching the finals stages of the Games. She would understand it's a kill or be killed situation and would do whatever she needed to survive. But, she would have trouble overcoming the last foes on her way to victory and would eventually fall short of winning.
Aquaman
By season three, Kaldur'Ahm has taken on the title of Aquaman and became the new leader of the Justice League. He is a sensible and pragmatic leader with an assortment of superpowers, including hydrokinesis and sorcery. He's also an expert hand-to-hand combatant, capable of taking down Superboy with little to no effort.
Kaldur would reach the final stage of the Games with no trouble. He would eventually face the last two opponents in the competition, engaging in a fierce hand-to-hand battle with one. And while Kaldur may have the water by his side, he would perhaps fall against the many traps set in the arena by the Gamemakers.
Nightwing
Dick Grayson may not have any superpowers, but he is very resourceful, making him one of the best characters in Young Justice. A world-renowned acrobat and martial arts expert, Dick is also an expert hacker who constantly manipulates technology in his favor.
Nightwing would immediately hack into the arena's security systems, using the Gamemaker's gimmicks to further his cause and making up for his lack of superpowers. During his confrontation with Kaldur, he'd use all the resources at his disposal to beat the Atlantean. However, he'd be unable to defeat the final tribute in the arena.
Halo
Halo is the ultimate threat and the perfect Young Justice character to debut in the DCEU. A Mother Boy inhabiting the body of a young Quraci refugee, Halo has unlimited potential and so many powers that not even she can identify. Indeed, the show hints that Halo is just beginning to discover her full potential.
Without a doubt, Halo would win the Hunger Games because she cannot die. She constantly brings herself back to life and would be immune from any attack in the arena, whether from her fellow tributes or the Gamemakers. Halo would win by being the last one standing, and she wouldn't even need to attack her fellow heroes.