These Yeerks were only featured in TV series and therefore are not canon.

Kandrona-free Yeerks, known informally to the Animorphs as Super-Yeerks, are a new breed of Yeerks that don't require Kandrona Rays to survive. They can also emit telepathic nonverbal messages. They're extremely sensitive to temperature. Before they could be delivered to Human hosts, they were killed by Marco, who raised the temperature in their room.


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