"Where could he have gone?!" Tylope said angrily.
"He has to be on this ship some where." Reylay said. "We could do a bio scan of the ship to find him."
...
"Odd. There is no human DNA on board this ship." Reylay said after performing the scan. "But there is an extra Globble (The name of the Alien race) on board."
"Amazing! He was able to disguise himself." Tylope said. "Are you able to pinpoint the location of the extra person?"
"Yes." Reylay responded.
"Then lets catch him." Tylope said.