The Anti-Sinworker faction of Grasscover Camp was led by Iris Yuma. The members of the group disliked the Sinworkers due to their actions in the void ,and at some point in time, Iris become overly frustrated with Tenebris's friendly treatment towards the Sinworkers and her faction decided to leave Grasscover Camp. The group eventually disbanded due to Iris becoming a SinWorker since as she began to lust for more power.