There's more than just the Rad Bug, there are a lot of other things that you'd think were Saban's or Disney's creations because they're stupid or weird, or that you'd think are Toei's because they're dark.
Hamster sensei in Ninja Storm? Hurricaneger had it first.
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The giant talking dog in SPD named Doggie? Not only was it Dekaranger's idea, the suit looked even more ridiculous.
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The list goes on.