Do we know if Ginyu is in his real body? When Ginyu first shows up he appears to be of a similar race to that of Freeza and King Cold but later we learn that he can swap bodies.

Do we know if, when Ginyu first arrived on Namek, was he in his original body? or has he already stolen that body from someone else?
You can't. He could have switched bodies several times before we saw him. Ginyu's Wiki notes


  Only a few people have seen Ginyu's true form, and Salza is among them


Which implies the form we saw was not his original.