He asked that Martian Manhunter select a "strike team" of fellow Justice League members and to "lead them on a very special mission".

The first mission of this new Justice League team concern a group of rebels, led by Rafael Sierra, who are planning to assassinate Sanobel President Enrique Ramos.

During an ensuing fight at the palace, Ramos hurries to shut down the superlaser and finds himself in Nightwing's sights, but, in a crisis of conscience, the superhero cannot pull the trigger.

[17] Martian Manhunter is faced with more trouble when two New Blood heroes, Joe Public and Geist seek his mentorship, but by the end of the tale in issue #9, they revoke their membership in the League, confident that they're not cut out to be superheroes.

After the mission, Hannibal Martin reveals the return of L-Ron, still inhabitting the body of old foe Despero, to warn the team of the coming threat of the Overmaster.

During the assault on Overmaster's citadel, Gypsy is left behind in an Arctic wasteland as the main group forged forward, leading her to quit the team after the battle.

The Task Force then become embroiled in the Zero Hour conflict, and Triumph, a hero retconned into having been a founding member of the original Justice League, appears and joins the team.

After Zero Hour, the Martian Manhunter and L-Ron assemble a new group, making the Task Force a training ground for new heroes, and the team consists of themselves, Triumph, the Ray and a returned Gypsy.