If you want my so called "OP" class worm choose the big wings that let you fly, long body that gives you more hp, sleek spikes, shredder teeth so you can live very long, blood fangs and the vaccum thing at the end.
You start off with a cute little duck then get to the 2nd evolution stage they kinda look weird. Last at evolution 3 one of them becomes a bird and the rest look like mutated squidwards with duck heads... good job