The Mastermind Shield (MM) first appeared in Alpha 3.
| Alpha 3 | Alpha 4 | Alpha 5 | Alpha 6 | |
|---|---|---|---|---|
| Graphic | |
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| Date Seen | Alpha 3 SPR | Beta 4 SPR | ||
| SPR # | 304 | 299 | ||
| Defense | 30 | 40 | ||
| Weight | Unknown | 54 | ||
| Price | 2000 | Unknown | ||
| Found | ||||
| Comments | The shield had 5 atk power | atk value gone |