Matsumura also states, Nemuri Neko "Sleeping Cat symbolizes Nikkō or the Spirit of Ieyasu, who was thought to be the manifestation of Yakusi Nyorai", the Buddha of Healing, who offers medicinal remedies, gives nourishment to the mind, body, and spirit, and comforts the sick and cures illnesses.
According to some Buddhist traditions, Dīpankara (also Dīpamkara) was a Buddha who reached enlightenment eons prior to Gautama, the historical Buddha.
In Buddhist tradition, Kassapa (Pāli) is the name of a Buddha, the third of the five Buddhas of the present kalpa (the Bhaddakappa or 'Fortunate Aeon'), and the sixth of the six Buddhas prior to the historical Buddha mentioned in the earlier parts of the Pali Canon (D.ii.7).
In Buddhist tradition, Koṇāgamana is the name of the twenty-sixth Buddha, the second of the five Buddhas of the present era, and the fifth of the seven ancient Buddhas.