KY-21H "STRONG MAN"
- KY-21H is a Nifonese helicopter. While various variants of this helo served in Nifonese Air Force and Navy since 1975, this particular modernisation (Mark 3) entered service in 2014.
- The title "Rikshi" used as the designation is a Nifonese name for a sumo wrestler and means literally "strongman". This helicopter is often referred to as "Sumo" by non-Nifonese users.