My idea is gonna be hard to put into words, but hopefully it won't be TOO confusing.

I'm gonna let Vile(currently being modified) tell the plot.

[i]Well, I have created plenty of creatures in almost every spot which means no matter where you go, one or more of my creations will be there. Oh and I have altered every single place here to seem more fitting for my needs.[/i] Basically what the title says, but will you stop him or let the chaos continue? 

[hider=Onto the rules(as usual)]
1. No godmodding whatsoever 
2. Do not control or kill a character that isn't yours without said creator's permission.
3. Always listen to and respect your GM(s).
4. Every CS [b]MUST[/b] go in the character tab. 
5. Also, do not tell me how to run my own rp. (It irks me when people do this)
6. Have as many characters as you can handle
7. In case you didn't get it the first time, ALWAYS ACCEPTING!!!
8. Must have a weakness, no exceptions.
9. Keep romance at PG-16 (though it's rare this ever happens in a crossover)
10. Put "[b]:P[/b]" somewhere in your CS so I know you read the rules
11. Have a blast (in other words "Have fun.") [/hider]
[hr]

Places.
Burning hot desert with a lake full of lava ahead. (I'm imagining a lot of "Ow's" for this)
Icey and slippery cavern. 
Human-filled city (live humans, not dead, well at least not yet)
Room full of human blood (No dead bodies, just leftover human blood that is somehow still fresh)
Vile's secret home (which only HE should know about in the beginning)
A nice little cabin sitting all alone in the middle of forest. (But there's something odd about those trees)
[hr]

Vile's creations (all will be NPC unless someone specifically ask to be one of these)
[hider=Lava monsters][url=http://img.memecdn.com/giant-lava-monster_o_2249745.jpg] Lava Triceratops [/url]
[url=http://orig09.deviantart.net/aa5a/f/2014/259/a/1/lavascorpion_02_by_minohkim-d7zh3zn.jpg] Lava Scorpion [/url]
[url=https://s-media-cache-ak0.pinimg.com/736x/aa/46/41/aa4641641fadc44c8697bc61ba125d25.jpg] Lava Bear [/url] 
[url=http://cdn.obsidianportal.com/assets/122166/lava__creature.png] Lava Spider [/url] [/hider]

Defeated
[s][url=http://www.yuimen.net/galerie/albums/userpics/10054/zone34.jpg] Odd looking Sand Hyenas [/url][/s]

[hider=Blood monsters][url=http://vignette3.wikia.nocookie.net/adventuretimewithfinnandjake/images/7/7e/Blood_Demon.png/revision/latest?cb=20120826230143] Blood demons that use cuteness to deceive their victims [/url] (And yes, they're made out of human blood). [/hider]

[hider=Ice Monsters][url=http://img11.deviantart.net/b0ab/i/2014/113/a/2/my_ice_monster_oc_ovo_by_yokikoakazune-d7fmw87.png] Four-horned Ice dog with a forked tongue [/url] [/hider]

[hider=Forest monsters][url=https://s-media-cache-ak0.pinimg.com/originals/7b/14/b6/7b14b64220419bb318fe02d765ff3a7c.jpg] Little tree roots with the eyes of an owl. [/url] [/hider]
[hider=City Monsters] [url=https://images5.alphacoders.com/298/298619.jpg] Really cool-looking monster that I don't have a name for yet. [/url] [/hider]

[hr]
CS
Name:

Nickname:

Age(if applicable since not every fandom specifies this):

Gender: 

Powers/Skills:

Weakness(es):

Species:

Crush:

From:

Appearance(s)

Pers(short for personality):

Bio(as always, this is optional):

Other(anything else we should know about you?):

Where'd you end up?(Read above or put something here as a suggestion):

Are you going to stop the chaos or no?:
[hr]

Characters so far(including mine)
Vile, Price, Joey and Meta Knight (Mine)
Joe Knox (mmarage)
Mizn Tan-Erbo (eemmtt)
Akuma and Starfire (Ninkitty)
Kabal (Nerevarine)
Shadow (Blueflame)