Navarino

The Navarinos were a race of vaguely humanoid aliens.

Biology
Though slightly shorter then humans in size, Navarinos appeared more like giant starfish with five appendages covered in suckers. Navarinos required advanced disguises in order to pass themselves off as humans. Navarinos also had high metabolisms, easily overheating and becoming exhausted after short periods of activity. Navarinos spoke in a warbling voice, but they could speak Human languages. (DW: Delta and the Bannermen)

Technology
The Navarino had time travel technology. (DW: Delta and the Bannermen) As they only used it for fun, the Time Lords didn't bother to stop them, but did impose a very high tax upon them. (NA: Return of the Living Dad) They also had devices which allowed them to take the appearance of Humans. (DW: Delta and the Bannermen)

History
A group of Navarinos attempted to go to Disneyland with the Nostalgia Tours operation, but they accidentally went off course and landed in Wales instead; this group was later killed by a team of Bannermen. (DW: Delta and the Bannermen)

Navarino technicians were employed by a group of Slitheen family members to build a temporal drive. They were eaten after it was completed. (NSA: The Slitheen Excursion)