Maple seen a Great Shielder that had impressive looking gear, she still only had the starting gear. So she asked him where he got it. He said it was custom made and introduce her to a Crafter. Maple discovered she definitely need not have the funds to make one herself. The Crafter pointed out a place she could go to earn some coins. Unbeknownst to them, Maple just went there Solo, they expected her to form a party.
Anyways story short, she had to fight the boss with starting equipment which just used poison attacks. Luckily Maple had a stash of healing potions and getting hit repeatedly by the same attack will boost your resistance to it, and yes Maple managed to get immunity to poison with her last potion.
I'd that's expected of a main character though, somehow pulling through an impossible battle, no? Problem is the poison completely destroyed her shield and short sword too, so she had no way of fight back either.
Maple ended up taking a bite of it and figured it actually did damage, so she literally started eating it. Finally doing enough damage to defeat it. She even managed to get the skill to use all the poison dragon's attacks.
Other players are definitely not immune to poison. Maple has eaten other monsters since too.
By the way Maple is serious about not getting hurt, she has 0 in every stat except vitality which boosts her defense. Because of this she even got other skills that helps boosts her Vitality further. Every time she levels up she pours all her points into Vitality. But she isn't strong or fast, she's incredibly slow. She can't even run, people walk faster than she can run.
Lucky for Maple there's equipment that boosts the other stats. She doesn't have any boosts for Agility though. So besides Agility and Dexterity her stats aren't actually 0.