1. Droid PositionJedi Temple – level 2, near Transit Shuttle, point the view toward east.
2. Droid PositionThe Forge Remnants, Southern Tython, above a ruins (near pond).
3. Droid PositionMaster’s Retreat, at The Gnarls taxi pad, point your view toward Master’s Retreat. Droid is above it.
Source: Official MCR-99 droid locations (hidden planetary achievements), MCR-99 Droid Locations post 2.0 on Swtor official Forums. We would like to thank SWTOR community members for all additional information.