Muk

[PokePoindexter]

MUK's flesh is literally a layer of thick sludge. If it doesn't eat enough poison gas, the sludge hardens and this POKeMON becomes completely immobile.

MUK is made when a GRIMER falls into a vat of radioactive toxic waste. This waste causes it to mutate, and become more poisonous. Standing around one too long can make one sick.

MUK's body releases poison gases that are harmful to humans and other POKEMON. If it comes near polluted waters, it grows bigger by absorbing the water and turning it into sludge for its body.

(Probably the worst idea I've had thus far, but it's worth a shot.)

[NyteFyre]

ehh...how about....

MUK
Muk was made when a Grimer fell into a vat of radioactive toxic waste. This waste caused it to mutate, and become more Poisonous. Standing around one too long can make one sick.

[ImmunityBow]

Try to keep each Pokedex entry to two sentences. I also generally don't like entries about how one Pokemon evolved from another, but that's just me.

[Cranky Guy]

Hehehehe.I totally agree with ImmunityBow.Here is one of my ideas.

MUK's body releases poison gases that are harmful to humans and other pokemon.If a MUK comes near polluted waters,it will grow bigger by absorbing the water and turning it into sludge for it's body.

Maybe it's a tad too long...

[ImmunityBow]

Just a couple of grammar and typo errors:

MUK's body releases poison gases that are harmful to humans and other POKEMON. If it comes near polluted waters, it grows bigger by absorbing the water and turning it into sludge for its body.

Make sure to put spaces after . and , capitalize POKEMON and "comes" and "grows" should be in the same tense. Also it's "its", not "it's", in this case.

[Cranky Guy]

Thanks for the grammer correction IB.

[SilentSentinel]

I like cranky guy's the best.

[ImmunityBow]

Sure, cranky guy's looks fine to me too.

[NyteFyre]

Agreed.

[Cyndadile]

Yep.