Citra - A highly advanced technological race that is all but extinct. Tall, thin humanoids with white skin. Originally had around a 2000 year lifespan but with minerals from their homeworld were able to sustain their lives indefinitely at the cost of turning their skin gray. Created the 48 Citra robots designed to defeat the Denten. Managed to set in place a global defense network and defend themselves from the Denten for many years. They began a campaign to destroy the Denten but failed after several years. After a long war the Citra homeworld ran out of resources, rendering them unable to maintain defense against the Denten. The Denten then took over the Citra and absorbed most of their technology. All the Citra robots were destroyed but 3. One went into hiding and later helped fight the Denten again. This robot was also the teacher of Xenon. The second was mostly destroyed and secretly kept far away to protect it from the Denten. It contains information on the Denten prime leaders. The third fell into the hands of the Denten and was researched to create future robots and AI. The Citra also created the zeke and zella units: small flying robots with the processing power of a Citra robot. Programmed to serve a master, they are later given to Xenon. The Citra were able to make contact with beings in another dimension who built the planet-sized computer which retains all Citra knowledge that Xenon's eightyeight unit is connected to.

Clear Sight - The name given to Sol's ability to collect and focus scarce photons to see further than normal and better in the dark.