Advice? Couple IDs please

First i believe is a bristle worm? Then ive got these long flowy clear ish threads that poke put from the rock. Tube worm?

 

Definitely bristle work.
Can't really make out the second pic, sorry.

 

Looks almost like a feather duster tube with clear antenna. But like 2. Instead of what looks like a feather duster

 

hes a big boy. 1/8" by atleast 2". Dont know if i wanna keep them or try and get rid of them. Creeps me out. And im pretty sure i already got "stung". after handling the rock i felt like i had a splinter in my thumb but cant find anything. Little monsters. Haha

 

Oh, that's a CuddleWorm. They like being held in your hand and like a nice firm hug.

Definitely a bristleworm. They're mostly nocturnal, they'll clean your tank up nicely of any detritus or leftover food. They'll only grow as large as your tank allows (via nutrient availability) so they're a self-solving problem if you decrease your feeding. People tend to be on the fence whether or not it is important to remove them.

 

Heres a pic of the other thing this one is coming out of the sand.