Siddhartha Gautama was the prince who got tired of plots and tricks in the palace. He left the palace and meditated under the infamous pipal tree for 49 days and achieved Nirvana or Enlightenment.
Indra is king of the gods (equivalent of Zeus, Jupiter or Odin) according to Hinduism.
Qin Shi Huangdi is an Emperor of China from the dynasty of Qin. He unified China after the Warring States period. He abolished feudalism and standardized the measurements.
Confucius is a philosopher who said "What you do not wish for yourself, do not do to others."