Uatu possesses vast Glossary:P#psionic, psionic abilities such as Glossary:T#telepathy, telepathy, energy-manipulation, and illusion casting. His Glossary:S#superhuman, superhumanly complex intelligence enables him to monitor activities throughout Earth's solar system simultaneously. Uatu can transform his body into a form of unknown energy while still retaining his Glossary:S#sentient, sentience for travel through Glossary:H#hyperspace, hyperspace. Bolstered by treatment with "delta-rays," Uatu possesses virtual immortality, although he can die by losing the will to live