Sakra-Devanam-Indra was also present.

He is the second god-emperor, in charge of four regional godkings. He commands the dragons (nāgas) and demons (pretas), not letting them offend beings unrestrainedly but making them (beings) always cultivate meritorious virtues. He makes the sun and the moon shine clear and bright. He often acts as a main interlocutor who draws out remarks or sermons [from the Buddha]. Hence, he is mentioned in the beginning [of the paragraph].