as only ones i find in thunderstorm are the defiant or w/e dog. They do not coutn for limited quest...
as badly implemented as the gigantix system is the confront 5 of them being a specific one is another layer of PoS design.
devs reasons this system sucks:
Thunderstorms are rare as heck.
Thunderstorms last random amounts of duration.
Gigantix scale unfairly even if low lvls are in area (which is them doing what they are supposed to be doing..shouldnt punish them by making others rage at em for making fight harder/impossible)
9/10 times you will waste ur time and not kill it.
Loot is honestly not worth the PITA fight. (someone has math'd it out and its lei ka 1% dmg increase over reg series of weapons with a huge def debuff)