Demon COO

UL 20-3 is the third stage in UL 20.

Battleground

 * Dolphinas and Calamaries take turns spawning:
 * 5 seconds150f, Dolphina.
 * 8.3 seconds250f, Calamary.
 * 16.7 seconds500f, Dolphina.
 * 25 seconds750f, Calamary.
 * 33.3 seconds1000f, Dolphina.
 * 41.7 seconds1250f, Calamary.
 * 50 seconds1500, Dolphina.
 * 58.3 seconds1750f, Calamary.
 * 66.7 seconds2000f, Dolphina.

Reference

 * https://cdn.discordapp.com/attachments/647391020455297034/649161926806339585/unknown-8.png