I noticed you listed the security guard and evil chicken as "Historic Events" or otherwise discontinued. This is not true, these two still exist just not as random events. You could consider them as casual encounters.

 

 

 

The Security Guard, like the dwarf, wanders RuneScape and gives out Security Books to anyone that talks to him.

 

The Evil Chicken can be found on occasion at various chicken farms trying to raise an army, fortunately for us the chickens aren't that bright and the Evil Chicken can never form a disciplined force.

 

 

 

I apologize for not having pictures of these but you can check them for yourself if you want to confirm it. I saw the Security Guard and Drunken Dwarf while chopping an Evil Tree and they soon teleported in a puff of smoke after speaking to them. I saw the Evil Chicken trying to form an army at the Champions' Guild chickens while I was on a bush run.

 

 

 

I will try to get pictures if I can spot them again.

Thanks Zalok, we suspected they were around somewhere, will get that added asap.

 

 

 

 

 

EDIT: added, credited