Cryosleep Tanks, also called Stasis Tanks, are devices utilized by Space Pirates in their Project Helix endeavors. These chambers are immune to Samus's arsenal, but a single punch from an Elite Pirate on the inside is enough to shatter one. Additionally, the stasis tank housing the Phazon Elite in Elite Research can be destroyed back damaging the Bendezium alloy plates with a Power Bomb.
Several stasis tanks are used to house Elite Pirates in the Phazon Mines, especially in Omega Research. Each of these units apparently has a designation, though only Unit CS-4468R is named. The largest of these units is the one built for the Omega Pirate, whose immense size necessitated a new cryosleep tank design.
Unit CS-4468R in the Dynamo Access
- "Unit ident-code EPG-8642, batch 23, field designation 'Elite Pirate Alpha.' Stasis tank reinforced with Bendezium alloy plates." —Scan Data (Metroid Prime)
- "Cryosleep Tank. Unit CS-4468R. Unit modified for Elite Pirate storage." —Scan Data (Metroid Prime)