Plagiarism is indeed disgusting.
I'd appreciate it if you provided links, Dragonide. :) Looking up
the power of Ice, I can see that Solari is in hir user info as well as in a
fic posted November 8 2005.
Solari only joined June 18 2007, more than a year later.
On the board, Solari has
posted pictures of coloured-in Beau screenshots, and has not credited the power of Ice for the dragon's name. As this is in FanArt, LightningFlash should be informed. Solari's name can be said to be a tribute, but posting about the character as though they were hir own is plagiarism. I don't know if Solari has stolen any of the art as well.
On Solari's own website as linked in their
profile, xe has
written about Sam and Solari as though they were hir own. This is also plagiarism, and though there is nothing the board administrator can do about it, it's good of you to bring it to the attention of the fandom. I also don't know if xe had permission to mention the other OCs, but on the
home page xe does link to BlueBooster's and the Great Grey's fansites, so although xe doesn't give credit for Aquarius either it seems like xe didn't intend to plagarise this part.
Although here we are all engaged in writing fics and doing art based on Dragon Booster, every one of us here knows that we are only fans of the show and that we do not own it. This place is called the Dragon Booster fan board. When we write fics and do art about a character of someone else's creation, though, unless we mention who made them up the audience can't be expected to know this, and so it's stealing the credit from them. Sam and Solari were created by the power of Ice, and taking them without consent is most certainly plagiarism.
To Solari, you may not have realised that not everything on the Internet is free, but it's unfair to the power of Ice to write about hir OCs as though you own them. You need to note who created them, just like if you were doing an assignment and you copied your classmate's. You've stolen someone else's work, and this is wrong.
ETA: Solari appears to have started to give proper credit.