The Monster Invasion

So as I've been watching Doctor Who and playing more Pokemon, I got the idea to make my own monsters. These are my three BEST monsters I have come up with, with back-grounds of where they would live, if they come in packs and all of that. I also made a pic with Photo Shop so you guys can get an idea of the monsters I am talking about.

Top: Cringe, Left: Monster Of 1000 Teeth (Molt), Right: Jolt

The Cringe: Usually come in packs of 5-7, this is a flying animal, all though it can walk on land. It sleeps on clouds or in tree tops. The Cringe are expert flyers with their 2 sets of wings, they can go up to 60 MPH and make a screaming sound, much like a horrified-screaming human. The Cringe are cursed to have half-circle feet, which give them horrible balance on land, and makes it very hard to sleep. Their heads are split into 3 sections, which makes grabbing its prey and eating much easier. They tend to come out at night, where they are hard to see, the only warning you get from these horrible creatures are their scream right before they trap you.

Molt: This is a one of a kind animal, it is the last of its kind. This creature is said to have a thousand teeth, or even more. Its teeth can spin in different directions while pushing to the center of its mouth, making a horrible scratching sound. This creature can never close its mouth, and has a tail to knock out its prey, which afterwards devours its meal. Anything that enters its mouth is destroyed, metal, diamond, or any other material you can think of. Of course, these are just rumors, because anyone that gets near the creature is killed within seconds, and the ones that make it back alive go insane. This creature does not wander, as it stays in its cave when it is not hunting.

Jolt: Usually travels in packs, it is common to find 10-15 of these at a time. The Jolt has rounded off feet, the legend says the first of the Jolts had a fall, in which it had to chew off its own feet, leaving it stranded for days untill its legs healed, this was horrible for the first Jolt, but it gives its descendants a advantage, With the Jolts rounded off feet, it can run at 150 MPH, some people have said to see one going closer to 250 MPH, but there is no confirmation. Its rounded off feet also have a disadvantage, with it having bad balance while standing still. The Jolt rams into its prey, slicing it with its spikes all over its body, and then whipping its prey with its tail, causing even more damage. The creature sounds more like a dog, which it also uses to distract its prey while the other Jolts assault it from behind.

If you have any suggestions to my monsters, such as how it acts, or how it looks, please tell me in the comments, I will try to post more of these in the future.