Shadow Flame Bob is like a cyber bob, but it's very hard to get. It is a good weapon for doing 125 damage.
How to get: How I said it's very hard to get because to get this weapon you need to kill a very rare boss: Shadow Error Sans. When you will kill him, he will drop a purple book, not from normal error and normal ink sans bosses. Then click on the purple book.
Or just buy it in underswap bob shop for 1.25m gems lol