Red Bovine is so far the only known Ferbangi.
According to a story, he was a slave trader who was imprisoned in Cell 106 at the brig on board the DeepShip 86. He tried to escape by crawling out the porthole and immediately imploded, leaving a permanent blood stain on the floor. This incident has earned the cell the nickname "Red Blood Cell".
It is insinuated that the Quintuple-Thick Dynapane Glass covering the brig's windows is virtually indestructible (in fact, the bars are there just for the atmosphere), so it's highly unlikely that anyone could simply crawl out from there. However, the story of Red Bovine could be the reason that the Quintuple-Thick Dynapane Glass was fitted.