Mystery Crab?

[Micro-Reefs Aquarium]

Please help me ID him. He has black claws and literally tore my live rock into what is seen in the video, which crab is he?

Thanks

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[Micro-Reefs Aquarium]

Here is 2nd video side view.

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[Micro-Reefs Aquarium]

Bump! Please help? He has moved locations and if he is bad I need to get him out of my reef.

 

[Derrick0580]

Toss it in the sump…sharp pointed claws=bad, not sure exactly what species it is but it’s definitely not reef safe!

 

[BanjoBandito]

xanthid crab of some kind would be my guess. Not good.

 

[Sharkbait19]

Looks like a strawberry crab, which is supposedly reef safe, but every crab is different.
Your rock might actually be a sponge, and the crab is just borrowing into it.