Defense
Sentinel
2 star cost - Single source - treat as unconfirmed
What it is
The middle tier of the Shieldman line, Sentinel provides dependable defense and acts as the mandatory stepping stone toward Imperial Wall.
How to use it
If Imperial Wall is the goal, Sentinel is only a waypoint. Confirm the level 20 requirement and the ascension steps before you evolve.
What creators say
Describes the chain as Shieldman to Sentinel to Imperial Wall.
Source: Tuki - Why Your Spartans Keep Losing (Counters Guide) (2026-09-21)