SD Kshatriya (NZ-666) from the series Unicorn Gundam is a mobile suit featured in the novel and OVA series Mobile Suit Gundam Unicorn. The unit was piloted by Marida Cruz.
SD NZ-666 Kshatriya Gundam Papercraft Model requires 22 sheets of paper . SD NZ-666 Kshatriya Papercraft designer is Panda .
There is another model made by Rarra posted here . It’s the same Gundam model but designed by different person.
The difficulty in building and assembling is different as well.