Thom Kallor is the real name of Star Boy. Born on an orbiting star
observatory, Tom gained the ability to draw
mass from the
stars and
give that mass to an object, making it
super-heavy. Thom later was exposed
to the tail of a passing
comet and gained abilities similar to
Superboy.
With these abilities, he applied for and was accepted into the
Legion of Super-Heroes.
Star Boy served in the Legion, until he lost the powers inparted him by the comet. He was
injured and spent several months recuperating. Upon returning to
duty, Star Boy killed a former suitor of Dream Girl's to protect her.
It was later proven by Brainiac 5 that he could have stopped the man
without killing him. For this act he was kicked out of the Legion.
He served for a time with Dream Girl in the Legion of Substitute Heroes,
until he was given Legion membership again. Due to the Earth being surrounded
by a cloud of Kryptonite gas, Superboy and Supergirl were forced
to resign. They nominated Dream Girl disguised as Miss Terious and Star
Boy disguised as Sir Prize to take their places. The two former
Legionaires distinguished themselves and were later accepted again under their
own names.
Star Boy has resigned from the Legion when Xanthu, his home planet
called him back to act as the planet's protector, after Atmos, the
planet's former protector, disappeared. Atmos had been kidnapped
by Universo and even after he was freed has not returned to Xanthu, leaving
Star Boy as the planets protector.
Star Boy has been romantically involved with Dream Girl.