Seismix is a humanoid alien made entirely out of titanium and the Hidden Universe's DNA sample of an unknown species from an unknown planet.
- In Welcome to Chronospect, Seismix makes his debut. He appears only briefly after the Assault Omnitrix's Safeguard 30 (Master Control) is forcefully unlocked.
Back in Action: Alien Universe
- Welcome to Chronospect (first appearance; brief)
- Leaked (by Ben 10,000)
- Shades of Dawn
- Foreverlasting (brief)
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