Snapper, Willorn + Wormard

Snapper (Squirtle + Geodude): Their strong carapace is resistant to high water pressure. As moss grows on it, it sits down and waits for prey to come close enough to pounce.
Water/Rock type, based on the Alligator Snapping Turtle
 
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Willorn (Dunsparce + Weedle): These large worms have a great appetite when it comes a vegetation. A group of them will eat away all the leaves of a tree, sometimes resulting to the tree's death.
 
Wormard (Seviper 49% + Weedle 49% + Gyarados 2%): They have changed their diet to meat and hunt down other small pokemon. Their pincers are strong as titanium and can crack bones.