Zephyr Jones was the son of inventor Dr. Morrison Jones. His father spend the last years of his life building a rocket-ship. Morrison was intending to travel to Mars on his rocket. He was killed under "mysterious circumstances" before completing his spaceship. Zephyr completed the ship and took off with his friend, Corky Grogan. They ended on the dwarf planet Sunev, in orbit between the Earth and the Moon. They met winged humans and Zephyr chared the local princess. They then took off again.
Besides his mechanical knowledge, Zephyr was a decent fighter.