If they ran into another group of heroes (or similar); Which group would have jurisdiction?

Whoever punches harder, of course.

How much of Booster’s origin actually is in the historical record? And how well is it known? I would love to see the look on Braniac 5′s face when some less-informed Legionnaire starts gushing over meeting one of the members of the Justice League.

And then asks Booster if it’s true he was once Jaime Reyes’ lover.

They should team up all the goddamn time.

Also- on the subject of ‘Alien History’ and the Legion… I’ve been thinking for a while now that given the manic flailing that DC seems to do with the Legion franchise and it’s place outside the normal DC Universe allows it the ability to be experimental (and neglected). In any case… there could totally be a Vertigo series in the ‘dawn of the United Planets’ telling the stories of the colonization of the Legion-era Earth colonies (which is MOST of the Legion planets, frankly. There’s like 4 core Legionnaires that are actual non-human aliens, compared to a lot of environmentally adapted colonists) and the various politicking that caused major events historically (from the Legion’s perspective).

I was mostly thinking that Vertigo really needs a freaking SF book, and that a Legion-history narrative would really fit that ‘almost sorta, but kinda not’ continuity feel that a lot of Vertigo books have (like Sandman, Hellblazer, and Madame Xanadu.)

Someday, we’ll get to see the Brainiac 5-Booster Gold-dinosaur scene that’s been promised since issue 1 of the current volume.

The Tunguska meteor already gave powers to Fireball (Russian member of the Young Allies, the DC counterparts to the Invaders).

But we know there is no such things as continuity (or George Washington would be a Illuminatus in the DCU, according to the Time Masters mini-series…).

The Doctor’s niche is the reactive niche. It’s very rare for him to go anywhere with the express intent of stopping wars/fighting the Master/blowing up Daleks/picking up platonic TARDIS-mates. He chooses the time, but not the events.

I’m a little unclear. Are the Legion choosing to go to these places or not? If it’s the Trapper sending them there, then the fact that they have time machines is essentially irrelevent. If they are choosing to go to these places on their own, then they’re doing the Doctor thing. And, if they’re finding out that the Trapper is doing something evil and using their time machine to go to these places and stop him, then they’re back in Booster’s territory.

That said, some Booster Gold-LSH team-ups could be sweet.

Also, moral dilemmas make for tasty reading.