Premium Friday is the first stage in Worker's Revolution.
Squire Rels will spawn, with a ~3-7-second interval between them, until 3 have been spawned. 2 Otta-smack-us also spawn, with a 10-second gap between them. When the enemy base is at 99% HP, the boss, CTO Seal, will spawn. Squire Rels will begin trickling in again, forever this time. However, the Otta-smack-us don't respawn. Rain D. and Owlbrow appear every 10 seconds. Rain D. stops spawning at the 4th one, while Owlbrow stops at the 6th.