Generation 2 / FORM PROFILE
Echo
Echo is Wrath’s bat Nanogan in Evolutions. Its equipment transformation becomes the Double Echo Ax, giving Wrath Strength Mode a pair of axes stored on the back. The anime identifies Echo with Haos.
Background summary1 catalogue entriesAwaiting independent review
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A few things to know.
THE PHYSICAL RELEASES
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Sources & further reading.
Brief paraphrases with source links. Story facts belong to their named continuity; exact toy releases are documented in the catalogue entries.
Echo — The Bakugan Wiki