Rift Mob:Janda Thonn  

Janda Thonn is an odd rare. She is not only a quest mob for the Defiant but she will flag you PVP if any Guardian attack. I'm not certain but I think she despawns as well after time. She has no diamond on her portrait but she is indeed a rare mob.

She spawns at Location: 4440 - 4350, Frayworn Rock