Bonus - How To Mess With PC's
I've had numerous NPC's over the years of DMing, but as I read the other entries, I started laughing out loud as I thought of my two favourite toadies, Koro and Boro.
Koro and Boro were two little kobolds that follwed around this Ranger guy named Rion Crock. This hails all the way back to 1st edition, when alignments were kind of important. Anyhow, these two kobolds were spared by the normally humaonid-hating Ranger because I role-played how pathetic they were to perfection. After the Ranger and his henchmen trounced their companions, these two begged for their lives, and I mean *begged*. They went on about how they weren't like their brothers, how the only reason the atacked the party was because of their cruel, harsh masters, and how they were the smallest members of their group, and so on. They even cried. Because the plyayer was laughing so hard at my attempt to be pathetic, Rion let them live. In express gratitide, the two insisted on following the Ranger *everywhere*. Into dungeons. Into towns. Into inn rooms. They were 100% convinced that the only reason they were alive was thanks to Rion Crock. They would call him "master" and run errands for him. Even errands he didn't want. Like the time they brought him a roasted cat for dinner. And the time they found some "shiny things" at a store that they thought the Ranger would like. And what's better, is that they they would defend the Ranger to their deaths with their little spears. Over and over again.
How?
These two little buggers had a special quality - Troll blood. I had read something back in the day called "The Orcs of Thar", an old Gazetteer that is still, IMO, the BEST humanoid resource material ever. In it, they talked abot cross-breeding humanoid types and the potential results of doing so. It gave me the best idea ever.
So, imagine, if you will... a pair of kobolds, with their 1-4 HP, and regeneration. No matter how many times they got knocked down, unless they were burned/acided etc., they would constantly heal and come back for more.
When the Ranger was in trouble, the two heroic kobolds would scream bloody murder, charge with their little spears, and die a painful and quick "death". Rion would shake his head, sigh, and move on. Several hours later, Koro and Boro would come running, all concerned and worried that master has gotten eaten. Thankful that he wasn't, they would fall into formation and follow master along until the next time they went down. And come back later.
Now, for lower-level games, mess with your PC's by sending kobolds at them who can regenerate. Have them fight the same party of 6-12 kobolds all day. Or all campaign. Wiser players might catch on, but will they care? I guarantee it will be good for a chuckle or two.