Superboy and the Heroes of Tomorrow

Superboy and the Heroes of Tomorrow is an animated American superhero TV series based upon DC Comics. It creates a completely original team of superheroes, assembled by the Justice League to protect Earth.

Plot
Season 1:

As the series opens, the Justice League intercept a spaceship en route to Earth. On board, they discover the evil Kalibak and his alien minions, who come from Apokolips, and a deadly battle ensues. Just then, a solar storm usrrounds the ship, and in a desperate effort to protect humanity from Kalibak, Superman blows a hole into the wall of the ship and flies out with Kalibak, seemingly destroying them both. The horrified League memebrs then return to Earth, while the other aliens flee back to Apokolips.

Two years later, the League is led by batman and a clone of Superman, Superboy, is in training to eventually take up his predecessors mantle. Unexpectedly, the emperor of Apokolips, Darkseid, arrives on Earth, launching a brutal assault. Darkseid, who was Kalibka's father, has come to seek revenge for his son's death. The Justice League quickly assemble an emergency team, with Superboy as the reluctant leader. The other members consist of Kid Flash, Timberwolf, Raven, Huntress, and Miss Martian. After the defend the Earth from Darkseid's attack, they are established as new fighting force, and throughout the series, battle Darkseid and various other foes.

In the two-part finale, the villain Mr. Freeze's taunts cause Superboy to begin to doubt his leadership skills, while Darkseid prepares himself for another brutal attack. Superboy decides to turn himself over to Darkseid in return for him not harming Earth, despite the other's pleas. However, as Darkseid's forces return to Apokolips, Superboy reveals a bomb strapped to his belt; he detonates it, blowing a hole in the side of the ship. As he escapes by flying through, Darkseid desperately leaps through after him, but Superboy kicks him away and sends him hurtling through space while he returns to Earth as leader of the team.

Season 2: