The monks of Grondheim are interested in the red magma crystal formations in Tallon IV's Magmoor Caverns. They may be affiliated with the Space Pirates, as the Pirates planned to process the crystals for the monks after their Phazon operations have ceased. The monks are mentioned in a Pirate panel scan in the Monitor Station, but are otherwise never encountered or mentioned elsewhere in the Metroid series.

"Local crystal formations possess low Phazon residue. They do have high value to the monks of Grondheim, however. Recommend processing of crystal for that market once Phazon operations cease."