| Metal Hearts | |
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 The Saturn Gaudies triumph over Metal Hearts in a ZOTT recap in Phase 57 | |
| English name | Metal Hearts |
| Type | Tenth Zenith of Things Tournament team |
| Debut | Phase 57 |
The Metal Hearts were a team that competed in the Tenth Zenith of Things Tournament (ZOTT). Placed in Block-A, they faced the Saturn Gaudies in Round 1, who barely beat them.
Given Yukito Kishiro's tendency to include references to bands in the series, the team may be named after the album Metal Heart by German heavy band Accept.
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