#1 is definately Vegeta. They made him have reddish hair in the earlier episodes.
#2 is not asking for the person but the nursery rhyme. I'm not sure who it is but it can't be Gero cause he made way more than 2 androids. There are three people mentioned in the rhyme. The person who created him, the person who awakened him and himself. Even though it sounds like Majin Buu since Bibidi created him, Babidi awakened him, Buu doesn't look like a ghost. He looks like a pink blob of shit.
#3 is definately Majin Buu. The small magician that is referred to is Babidi
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