Ben 10 Planet

Mor' Otesi

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The characters and/or events depicted in this article pertain to games of the Ben 10 franchise.
The characters and/or events depicted in this article are non-canon to the main series' continuity.
Mor' Otesi
Planet MorOtesi
General Information
Species Crystalsapien
First Appearance Ben 10 Alien Force: Vilgax Attacks

Mor' Otesi is the supposed homeplanet of Crystalsapiens and Crystallines.


Due to the decay of its ozone layer millions of years ago, the once lush green Mor' Otesi has long since become dangerously irradiated by a constant powerful barrage of ultraviolet light.

Mor' Otesi is a planet filled with purple crystals. Its landscape is now barren and rocky and its original native inhabitants largely became extinct.  However, one particular species adapted to the perilously high levels of electromagnetic radiation and has managed to thrive here over the millennia despite the planet's seemingly inhospitable atmosphere: Crystalsapiens evolved unique attributes to take advantage of their irradiated environment and went on to create a complex and sophisticated society on modern Mor' Otesi.

Plumber's Badges

1. After Max informs you of Echo Echo's Sonic Scream, there will be another glass crystal in the corner. Use Echo Echo's Sonic Scream or his Wall of Sound to shatter the glass and retrieve the plumber's badge.

2. As Chromastone, you will come to a laser-activated ride.  Before jumping on the next one, jump below as Big Chill to avoid dying and collect the Plumber's Badge.

3. After a huge fight, use Echo Echo to shatter the glass to get the badge.

4. Same as the third. Use Echo Echo after using his Carbon Copy ability to open a door.

5. After the last giant fight, you can use Echo Echo to travel deep in a corner to shatter the glass. 

Vilgax Attacks Timeline

Notable Inhibitants

Notable Visitors


The name Mor' Otesi means "ultraviolet" in Turkish.


  • According to Dwayne McDuffie:
    • Sugilite doesn't have a home planet as he's the guardian of Petropia; and was made specifically as a part of the Petropia back up system.
    • Mor' Otesi is just a legend.

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