The top two are the old ones, and the bottom ones are the redesigns (I'm not the best at naming things btw)
Spikemine's spikes had poison in them, before having that removed for it's redesign as Crawrock. Spikemine also used to be found in shallow water, But now as Crawrock, they stick their pointy spikes out of cave floors while digging, to injure prey. And then (unnamed) got changed entirely. I don't even remember what he does because didn't write it down... Arthrystal has poisonous fangs and poison coated tentacles it uses to whip opponents with.
