"Deion: Zerons are small creatures from birth to adulthood, but he (should be 'they') are strong fighters. Ever since they are born, all zerons have the same dream: to be the ultimate fighter. This creature will try to train anyway he (should be they) can. He (should be they) are quite persistant and loyal. Zerons always try ('try' isn't the ideal word) to protect their masters, despite their size. They are known for fighting any creatu; even if it wasnt threatening. The zeron is a carnivorous creatu, and will leave to hunt if you do not feed it."
I helped you with your grammar and spelling there, if this is going to become a deion, I suppose it should have good language. Oh yeah, what do you mean he? Is this a species with only one gender?