Brood Mother should rampage.
http://everquest.allakhazam.com/db/n...99857138852230
Failed Experiment and Velketor's Experiment should also rampage.
http://everquest.allakhazam.com/db/z...03531091192811
I don't remember anything else rampaging in Velks (Bob flurries, doesn't rampage), and I looked through alla comments on both the zone page and the higher level trash mobs and came up dry.
Add me to the consensus (and PS this should be in mechanics or NPC bugs).