In Kirby's Return to Dreamland, you fight HR-D3 in the True Arena.
In Kirby: Planet Robobot, you fight Dedede Clones and D3.
Susie transformed D3 into a cannon to fit the clones before returning to this dimension in the Starcutter.
...Which means Magolor stole it from the Ancients as well as the Starcutter.
What else has he stolen?
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