Aliens

Calvin has encountered aliens, both in his Spaceman Spiff fantasies and in real life.

Noted Aliens

 * Antarans
 * Ankorians (Passive, also Protective)
 * Akari
 * Bulrathi
 * Darloks
 * Elerians (Neutral)
 * Gnolams (Hostile)
 * Klackons (Hostile)
 * Meklars (Neutral, Hostile to Sillicoids)
 * Mrrshan (Mostly Passive)
 * Psilons
 * Sakkra (Passive)
 * Silicoids (Neutral, Passive to Sillcods, Hostile to Zorks, Zorgs and Meklars)
 * Silicods (Neutral)
 * Trilarian
 * Zokians (Unknown)
 * Zogians
 * Zorgs
 * Zorks (Hostile)