

Optimus Prime is depicted as a heroic, brave and compassionate character who puts all his talent to use to improve the world around him.

Optimus has a strong sense of justice and righteousness, and has dedicated himself to the protection of all life, particularly the inhabitants of Earth; he will battle his foes with unyielding resolve to uphold this belief.
You can download at here: Transformers Papercraft - Optimus Prime [via 4shared]