Chimeron princess

A Chimeron princess was taken as an egg to Earth by Delta. Together, they were the last of the Chimerons.

Biography
On Earth in 1959, the princess hatched and was cared for by Delta and Billy who obtained and fed her Chimeron jelly to accelerate her growth.

After the phase in her growth permitted her control over it, she used her singing to send the Bannermen into disarray. This worked to great effect when the Bannermen came to Shangri-La, with the noise being amplified through speakers. She left with Billy and Delta for other worlds. (TV: Delta and the Bannermen)