yes rouge is his sister so for all you "knurouge" fans that would be wrong!
Kenpachi54 Answer: ACTUALLY NO! I don't know if Knuckle's has a sister but I know for a fact that Rouge has NO brothers or sisters (WHAT SO EVER!!!). Even though Knuckles and Rouge are the same species (Echidan), Knuckles is like half porcupine and Rouge is like Bat (But they are Echidan)
P.S.: ROUGE HAS NO BROTHERS OR SISTERS WHATS SO EVER!!!! But I don't know if Knuckles has any I just know its not Rouge
(Don't edit this answer. I know what I put and I will edit it back if you edit it)
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No. Tikal is a member of a tribe of echidnas from thousands of years ago that Knuckles is the last survivor of.
I don't really know.... probably Tikal?
if your sims spouse has a brother or sister then they will be your sims brother or sister in law
yes she loves him in a episode I saw her kiss him. I think of them more like a sister-brother-fried relationship. That was a terrible attempt at a lie. No, she does not. I'm pretty sure they're related, actually.
nope he has no brother or sister but he thinks of sonic as a big brother