Waddle Dee Steel Fortress
The fortress appears at the end of Stage 5 of Old Odyssey, then again in Stage EX 2 of Royal Road. It appears by rising out of a pit, and has three Waddle Dees manning it on a side-platform (though they don't appear to be doing anything to help).
The fortress attacks by shooting missiles from its cannon mouth, which Kirby can spit back at it. However, Kirby needs to hit its support beams, which are only target-able for a short time to damage the tower. Each time a beam is taken out, the tower gets angrier and faster, while the Waddle Dees become more frightened. When the tower is down to its last beam, it will, in addition to the missiles, also occasionally spit out a spiky beam, which it will try to smack Kirby with.
Once defeated, the tower crumbles, sending the Waddle Dees flying, and revealing the door forward.
- The Steel Fortress encountered in Royal Road has Sectonian Waddle Dees instead of the regular type.