Snarbolax works that way when it has its near invulnerable defense (unstunned black coat) up so weps can’t hurt it unless you hit a bell next to it and stun it. They can have a weakness too but I know it ain’t no bell since something else entirely different lol. What makes it more horrifying is that they’re not AI monsters, they’re player controlled... and it’s fanart too so anything can happen xP.

No, bad Zen.
You're falling into the bad OC territory.

They look a lot stronger and possibly near invunerable. Could kill in a palosecond (before you can twitch or blink and your senses don’t pick it up).

How to survive: Blowing faces off with a boomstick.
Mankinds one and only useful tool.