I Hate Your Guts; I Hate Your Guts Too

Another week has passed...This calls for another double issue. Today, we start off with a self-proclaimed exotic gourmand:
Pokemon: Zangoose
Ability: White Ninja
White Ninja pretty much enhances the user's immunity system to maximum and further. It turns the user into a walking antidote to everything. In other words, White Ninja grants immunity to every single type of poison, toxin, and disease in the world. This has allowed Zangoose to feast on foods that would be considered poisonous to most people, such as fugu (Japanese puffer fish, well-known as a deadly poisonous dish) and various poisonous mushrooms. Zangoose is also able to drink massive quantities of liquor without suffering from alcohol poisoning (but he'll still get drunk...and he'll get drunk fast). Note: White Ninja does not make Zangoose immune to pain. A snake bite will still hurt like hell.

And now, the maniacal treasure hoarder:
Pokemon: Seviper
Ability: Poison Back
Poison Back allows the user to produce sharp, poisonous scales from his bare skin. The scales possess a toxin known as haemotoxin, which coagulates blood to cause swelling and extreme pain. The scales can be shed to turn them into projectiles or apply them on weapons (such as the Crimson Viper Tail wielded by Seviper) to increase the dangerousness of the weapon. Seviper and Zangoose have been rivals for as long as they've known each other. The scars on each of their faces and torso are caused by the other person and they're what remind them of the eternal feud that they were destined to fight. Zangoose is the cold and calculative type whereas Seviper prefers free and spontaneous fighting. As of now, both are still equally matched.