Dīpankara, one of the Buddhas of the past, said to have lived on Earth one hundred thousand years.
Theoretically, the number of Buddhas having existed is enormous and they are often collectively known under the name of "Thousand Buddhas". Each was responsible for a life cycle. According to some Buddhist traditions, Dīpankara (also Dīpamkara) was a Buddha who reached enlightenment eons prior to Gautama, the historical Buddha.
Generally, Buddhists believe that there has been a succession of many Buddhas in the distant past and that many more will appear in the future; Dīpankara, then, would be one of numerous previous Buddhas, while Gautama was the most recent, and Maitreya will be the next Buddha in the future.
Chinese Buddhism tends to honor Dīpankara as one of many Buddhas of the past. Dīpankara, Gautama (Buddha of the present), and Maitreya (Buddha of the future), collectively form the Buddhas of Three Times.