Most Olympian gods are identical in appearance to humans and are fully capable of having children with humans, other mystical beings, even extraterrestrials. The Olympians are closer to possessing true immortality than most of Earth's pantheons in that they cease to age upon reaching adulthood, though some reach maturity far faster. For instance, Marvel's depiction of Artemis' birth shows her growing rapidly after birth and helping her mother deliver her brother, Apollo. Olympians are immune to conventional disease, and cannot be killed through conventional means. All Olympians possess superhuman strength with males, typically, being stronger than females. The average male Olympian possesses sufficient superhuman strength to lift about 30 tons while the average Olympian female can lift about 25 tons. Several Olympians exceed these averages by a considerable degree due to naturally possessing greater physical strength, though some can augment their strength further by magical means.