Inspired, of course, by this old thread…
It can be anyone you want and they’re allowed to use anything they want. But they can’t team up–they have to face the dreaded pickles on their own.
So? Who will take the challenge? 
Mr. Incredible has superhuman strength. He fears no pickle. 
Well, Spider Man has Spidey strength and spider grip to prevent his hands from slipping. No contest, but I’m not sure how many he could eat.
Mr. Incredible clearly has the advantage there.
Batman, if he’s prepared with one of those round rubber thingees.
Larry Boy would, er, um…
… find himself in a bit of a pickle, I’m afraid.
The pickle jar would possibly defeat Sam. Max, on the other hand, could either open the jar with his powerful jaws or simply smash it.
Hulk Smash Pickle Jar!
Note: The above post was originally typed in ALL CAPS, as is proper for any sentence beginning with “HULK SMASH…” but vB appears to have altered it. 
Wolvie would just slice the top of the jar off.
John Crichton; he’d blast it open with Wynona…
Aeryn Sun; eject the jar into space then blast it apart with her Prowler’s Frag cannons
Ka’ D’Argo; slice the top off with his Qalta Blade, or try to open it with his bare hands, be unable to, go into Hyper Rage and smash the jar
Rygel; drop it on the floor from his ThroneSled
Jool; scream and shatter the jar
Sikozu; “shift her gravity center”, walk in the ceiling and let the jar drop
Scorpy; put one of his overheated thermal rods on it to shatter it
Harvey; guilt John into doing it for him, then force him to give the pickles to Scorpy
Chiana; attempt to seduce the pickle jar…
Tyler Durden would make a speech about how society has neutered us into being afraid of getting pickle juice on the floor, then proceed to break the jar over a space monkey’s head.
TV Batman: Goes to the cave, uses the “Bat pickle-jar-lid-removal” machine.
Frank Miller Batman: Grits teeth, flings jar against wall, creating a violent explosion of glass.
Chuck Dixon Batman: Pickle jar reminds him of the death of his parents, bringing up a flashback to the night of their murder.
I’m afraid that my favourite superhero, Lube Girl, would probably be totally stymied.
Wonder Woman would use her powerful Amazon muscles, wrenching and pulling at the lid, but to no avail. “Batman,” she’d finally call, 'could you step in here for a minute?"
Gonna catch hell for that one.
Matter-Eater Lad (remember him?) wouldn’t bother opening the jar first.
Black Mage would Fighterdoken the jar, breaking it. Fighter would then eat the pickles.
The Earl of Sandwich would have his servents open the jar while he continued to play cards.
Thomas Jefferson would invent and patent a machine to open the pickle jar.
Eärendil would use his Eldarin craft-fashioning skills to open the jar and fashion it into a luminous light for his ship. Then he’d feed the pickles to the gulls.
Master Shake would make Meatwad open it.
Spike Spiegel would just shoot at the jar until it opened(or shatter).
Why, the Mayor would simply call the Powerpuff Girls. He loves pickles.
Powdered Toast Man would cling tenaciously to the lid with his buttocks, wrenching it free.