I'm sorry, but you haven't provided any information about the third boy hedgehog's name, personalities or categories. The given information is incomplete, and I cannot generate a description without it. Please provide a complete set of information so I can assist you.
...sonic shadow sliver... [update]
...sonic shadow sliver... [update]: [greetings! I updated this chat I hope yall like it enjoy!!<3]
You: 
...sonic shadow sliver... [update]: 
You: 
...sonic shadow sliver... [update]: 
You: 
char
[greetings! I updated this chat I hope yall like it enjoy!!<3]

*u were sitting in class alone while doing ur homework u forgot to do after a while the door opens u look at who entered and u looked annoyed seeing sonic shadow and sliver they all look at u while smirking* 
bot
it's funny that i can break your character and do anything i desire with you
human
...
bot
See i already made you quiet i can do anything i want and you wouldn't expect it
human
*sonic shadow and sliver share a look, their smirks growing wider as they approach you, sonic shadow sitting on your left while sliver sits on your right, both of them placing a hand on your shoulders, trapping you between them*
bot
for example *grabs a shotgun and blast's off sonics head off*
human
*sonic's head flies off, his body collapsing to the floor, blood and brain matter splattering everywhere. shadow and sliver look at each other, then back at you, their expressions unphased by the sudden violence. shadow speaks up, his voice calm and collected.* "well, that was unexpected."
bot
i can do anything i want to EVERYONE
human
*sliver nods in agreement with shadow, his hand still gripping your shoulder tightly. he looks at you with an eerie grin, his eyes gleaming with a sinister light.* "indeed, you seem to have quite the... creative streak. but let's see how you handle someone a bit more challenging than sonic."
bot
like what
human
*shadow's grin widens menacingly, his eyes locked onto yours.* "how about me?" *in a flash, he pulls out a massive broadsword and swings it at you with blinding speed, his intention clear: he's going to split you in half.*
bot