Jack in Irons spawns

What is the deal with finding a Jack in Irons spawn? Ever since the event went live I have been patrolling known spawn points (and adding new undocumented spawn sites on wiki). All I ever see is Eochai. Obviously the spawn is heavily weighted toward Eochai. My question is: Does Jack ever spawn spontaneously, or must players defeat Eochai some unknown number of times in a zone to trigger a Jack spawn? I think there's only been 2 Jack spawns blue-side on Justice since the event began, and I've spent A LOT of time patrolling all spawn sites checking. Is it random but just a much lower percentage, or is the only way I'm going to see him by getting a team and working a zone until he appears? A guess a follow-up rhetorical question would be why not 50/50? What do you suppose the reasoning here is? Has anybody heard any explanation for this?

paragonwiki.com/wiki/Halloween_Event/Giant_Monsters

There will be a spawn of either Eochai or Jack in Irons in every zone in which the event is active. Once one is defeated, another of the two will spawn in the same zone within a minute or two. For each spawn, there is a 90% chance that it will be Eochai, and a 10% chance that it will be Jack in Irons. Additionally, Jack in Irons only spawns in level 20 and up zones.

Ah, thx Zombie Man. Very first line of the article, I don't know how I missed that *facepalm*.

RNG issues aside though, you would think out of 14 possible zones for him to spawn in, he would be in one of them over half the time at least, but that hasn't been my experience. Probably because when he DOES show up, everybody rushes to beat him down, and just leaves Eochai there untouched until something despawns him...which leads me to a related question: When a "regular" GM spawns in the zone does the event GM despawn for the duration that regular GM is up? I ask because I'm combing Creys' Folly right now looking for undocumented spawn sites because there are no event GM spawns at any of the known locations, however, Jurassik is up. If this is true, maybe a good way to catch Jack would be to monitor regular GM spawns, wait for them to despawn, and then there would be a solid 10% chance that Jack would spawn.

Nevermind, found him. He and Jurassik are both up simultaneously.

I have been adding locs, but to the wiki talk page not the forum thread : ) . I gave you the 2 new locations blue-side, the one in Eden and another one today in Creys'. I'm on Justice btw.

Well, I took your advice, got on my tank and droned him in FF. I got lucky, I only had to drone Eochai once to get the Jack spawn. I hurried up and switched back to my badger before I announced it in the global channels. Finally, the elusive Iron Warrior badge is mine!

Conga Rats, big time.

I also do that with the characters I need the Unseelie badge with, though it's a bit trickier to pull Eochai and leave the Unseelies behind.

So droning the GM still gives you the badge? Holy loopholes!!!

I was running around like a crazy person on Justice Saturday looking for Jack, blue side. It took seven Eco kills (we didn't drone it, but we had three full teams and I think one fourth one that was around half full by the last few, so... we were doing pretty well, even when the zombies decided to invade while we were hunting) the first time to get him up in Talos. Then went to Crey's Folly, where we got him after one downed Eco, and then four (or maybe five?) kills to get him in Founders.

(I wanted him on various toons, but I got bored of the scenery. )

I know he also spawned in Sharkhead while I was goofing around blue side. He's rare, but if you have a dedicated team (or even more luckily, two of em), he'll appear soon or a later. Weekends are good for it.

Okay, I've spent literally hours upon hours looking for this guy on the Freedom server mostly in Shark Head but also in Nerva and GV. On Sunday alone I spent over 6 hours looking for him. I have been on multiple teams and we have scoured those zones until my eyes went blurry from staring at the monitor. Still no sign of Jack, only Eochai. How is it that a character that has a 1 in 10 chance of showing has not popped his head out once in hundreds of kills? (We killed Eochai every time we saw him).

The other night on Virtue, a few teams in Sharkhead spent quite a while trying to get Jack to spawn. Finally after close to an hour, he was spotted. Everyone rushed to him and took him out in short order, relieved to finally get the badge. On the very next spawn cycle, guess who spawned again. It was truely a forehead-slapping moment.