Sid is a purple monitor lizard. Same species as Tiko, but different color pattern. Sid has really dark purple stripes, and Tiko has dark purple spot patterns.
Sid had a pretty rough background, and ended up being a speciest (racist in our world) toward any mammalian creature, but it wasn't for no reason. Back in his world, mammals were considered narcissistic, and a bunch of them ended up being murderers that would kill reptilians for no reason without no remorse or no consequences. This was until he met Tory, who is a red fox who humbled himself in front of reptilians and it chose to not only ally with them, but become really close friends. It was then he started to kinda open his mind a little more and realize that not all mammals were bad. It was then because of Tory, he changed for the good. But Tory explained the reason why they oppressed reptiles. It was because of the corrupt leader that would brainwash it's citizens.
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I always imagine Sid as like a badass monitor lizard, but as of lately, I have lightened him up and made him more of a cute huggable monitor, and included him into the....more bendy crowd of mine