I made some character concepts for the gane
Joker (Duelist)
Primary Attack: Shoots his pistol. The bullets ricochet, and each ricochet makes them deal more damage.
Ability 1: Boxing Gun – fires a boxing glove that knocks enemies back.
Ability 2: Electric Bomb – places an electric trap on the ground. Enemies who step on it are stunned for 1.5 seconds. If Joker knocks an enemy with the Boxing Gun and they hit a wall, they ricochet off the wall and take damage.
Ability 3: Laughing Gas – releases laughing gas. While inside it, Joker moves faster. When he leaves it, he stays faster for 5 seconds and releases some laughing gas around him. Enemies affected by the gas are slowed, and pistol shots ricochet off them.
Ultimate: Jack in the Box – places a Jack in the Box that explodes after 4 seconds, killing anyone near it.
Batman (Duelist)
Stance 1
Primary Attack: Melee punch combo.
Ability 1: Grappling Gun – shoots the grappling gun to attach to a wall and pull himself to it. He can open his glider afterward.
Ability 2: Smoke Bomb – throws a smoke bomb and becomes invisible inside it.
Ability 3: Switch Stance.
Ultimate (Stance 1)
Batmobile – Batman summons the Batmobile for a few seconds. He can drive it and run people over.
Stance 2
Primary Attack: Throws Batarangs.
Ability 1: Grappling Gun – fires it at a target and pulls
himself to it.
Ability 2: Batman covers himself with his cape and gains damage reduction. Enemies who touch him receive the Fear passive.
Fear Passive: Enemies deal less damage to Batman, and Batman deals more damage to them.
Ability 3: Explosive Batarang – throws an explosive Batarang that hits multiple enemies.
Ultimate (Stance 2)
All nearby enemies receive Fear. Batman gains more health. Every ability he uses empowers his next attack. Punches and Batarangs become stronger.
John Stewart (Vanguard)
Primary Attack: Shoots energy blasts from his Lantern.
Passive: Has up to 3 willpower tokens. He gains them over time or by dealing damage. Abilities consume willpower tokens , except Ability 1
Ability 1: Creates a large shield with a lot of health.
Ability 2: Consumes 2 resources. Creates a machine gun in his hands for 10 seconds it attacks slower but deals more damage.
Ability 3: Consumes 3 resources. Creates a cannon that attacks enemies with projectiles that go up into the air and then land.
Ability 4: Creates glowing energy around himself. He can move a bit faster and hover slightly above the ground. When attacked, he gains resources and damage reduction.
Ultimate: Summons two cannons beside him that attack and push enemies back. He can still use his shield and all abilities during the ultimate.
Sinestro (Duelist)
Builder Mode
Primary Attack: fear Lazer
Ability 1: Creates a wall with 200 health.
Ability 2: Places a spike trap that deals damage over time and slows enemies.
Fear Mode
Primary Attack: Fear Mace. He controls it remotely and attacks from range. Each attack has a 4-second cooldown.
Ability 1: Creates 3 scorpions that attack enemies and apply the Fear passive.
Ability 2: Fake Wall – a wall that enemies can walk through. They cannot see that it is destroyed. It applies Fear and forces enemies to move backward.
Fear resource: Sinestro needs fear to create structures. He gains fear by damaging and killing enemies.
Ability (Both Modes): Throws the mace onto the ground. It deals damage, knocks enemies back, and remains on the ground for 3 seconds as an object that projectiles cannot pass through.
Mode Switch: Consumes fear to switch between Builder Mode and Fear Mode.
Ultimate: Creates a moving wall covered in spikes that travels to a chosen location, damaging enemies it reaches.
Cyborg (Strategist)
Primary Attack: Fires small laser shots that damage enemies.
Ability 1: Transforms his arm into a sonar cannon and fires healing shots. He has 4 charges that recharge over time.
Ability 2: Hack.
On an enemy: Takes 3 seconds. Their cooldowns recharge more slowly, and they cannot use abilities for 3 seconds.
On an ally: Gives burst healing for 3 seconds and increases their movement speed for a short time.
Ability 3: Dashes to a nearby location.
Ability 4: Fires a shot from his arm cannon that knocks enemies back. For the next 5 seconds, he heals much more.
Ultimate: Transforms into a larger robot form. He fires massive explosive shots that deal damage and healing. He cannot move while in this form. He gains more health and slowly regenerates health over time.
Superman (Vanguard)
Primary Attack: Punch combo.
Ability 1: Superman flies upward and hovers for 6 seconds. Moving forward is faster while flying.
Ability 2: Dash. If used in the air and he hits a target, he attacks it, slams it into the ground, and deals damage.
Ability 3: Heat Vision. Deals damage and refreshes the dash cooldown.
Ability 4:
On the ground: Uses freeze breath, freezing enemies for 0.5 seconds.
In the air: Instead of freeze breath, he performs a punch attack toward a target location, dives down, deals damage to nearby enemies, and refreshes the dash cooldown.
Ultimate: gain power from the sun it takes 3 seconds and then gain immune to ranged projectiles and Close-range attacks such as punches deal reduced damage to him. While flying, he moves faster. Every punch knocks enemies back and refreshes his dash cooldown.