The idea is simple: come up with your own league!
Pick characters from any book you like, from any era you like, and to accomplish the type of mission you like.
To start with, I present you the Gentilhommes remarquables. This team was assembled to deal with a nefarious conspiracy of alien visitors out to steal all the wine in the caves of Champagne!!!
Cardinal Richelieu is the brain of the group and its originator. A man of reflection more than action, he stays behind and coordinates the movements of his agents.
Cyrano de Bergerac is his deputy in the field. Bergerac is possibly as brilliant as Richelieu, but tends to let his concentration stray on whatever subject meets his fancy. He's built a machine that allowed him to visit the Moon as well as the states and empires of the Sun, which will be practical to travel to the alien's base if need be. Like a XVIIth century Doc Savage, he's not only a pretty smart fellow but also a remarkable fighter, being able to outfence most people while simultaneously composing poetry.
Etienne Brûlé is an old wood runner from North America. He was saved in extremis from being tortured to death by natives and now serves Richelieu. He is very skilled in all hunting techniques and in Iroquois torture.
Micromegas is a space alien from Sirius. Unbeknownst to Voltaire, the gigantic being can change his size at will and walk among us incognito. (It explains why this character has the prefix "Micro-" in his name)! We aren't quite sure of what his abilities are, although he never ceases to amaze us.
Gargantua III is the descendent of the famous character created by Rabelais. He can't eat a cow in one meal, but is nevertheless a mighty fellow who acts as the muscle of the team (and involuntary comic relief, as he usually breaks a lot of furniture).
Masquerouge is not actually a literary character since she appeared in a french comic-book series; still, she's too good to pass. Baroness Ariane de Troïl acts as a kind of French Zorro, dressed up in red and her face covered with a hood. As fearless as skilled with a sword, she was blackmailed into joining the league when Richelieu found out her secret.
The beast is a fiendishly intelligent creature the origin of which is uncertain. As resourceful as Rin-Tin-Tin, this powerful killer is barely kept in check by the authority of Richelieu.
Unknown to the league's members, it is the forefather of the fearsome Beast of the Gévaudan, which a century later will kill over 100 persons in central France.
There we are! Now all we need is somebody to write an actual story about these guys!!!
What about you own team, folks?