Teleport Boss mod

[masternoxx]

I'm interested in making a simple mod for the bosses in Hexen, that will lower the chance of them getting stuck. The issue is posted here, viewtopic.php?f=50&t=68548

Basically need to place some invisible teleporters on the ground in a few locations, that can only be used by the bosses (can't be used by player), when boss touches area, it will teleport the boss to a set location.
The locations of the teleporters are going to be the areas where the bosses get stuck, freeing them to resume the battle.
On the second boss also I would like him to occasionally teleport randomly as well, about every 25 seconds or so. But that's low priority.

Both are to be teleported to the center of the room.

Have seen monsters teleport in often in DOOM, but these teleporters need to not teleport the player, and not appear as portals obviously.

Perhaps doom editor? , will check that out. Hopefully this is a mapping and not a scripting question, haha.

I'm a noob, can anyone help me with advice on how to do this? Thank you