Sun is a minor/side character in The Amazing Digital Circus. Sun is also the personification of Day in the Digital Circus world. Sun can talk.
Moon is also a minor/side character in The Amazing Digital Circus. She seems to be romantically interested in Caine, which appears to make Caine uncomfortable. Moon is also the personification of Night in the Digital Circus world.
They both know Pomni, Ragatha, Kafumo, Kinger and Queenie, Caine, Jax, Gangle, and Bubble.
They're both super funny.