- Illusion is a Dachshund/husky cross
- Dallas Ryder.
- Illusion was a gift from Morpheus to celebrate the fact that he made it to Camp Half-Blood. He was named Illusion because he was first seen in a dream message from Morpheus, and when Dallas woke up, Illusion was lying at the foot of his bed.
- He can give people calm dreams.
I don't think it's possible for a dog to have an ability like that.
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