Earlier I saw someone say that he reported someone for having a character named DrPepper with one of those accents. Is this actually considered bad?
Yes. Your account can actually be closed because of this. Here is a section of the rules of conduct that clearly says that:
You may not use names of copyrighted or trademarked characters, materials or products, e.g. Coca-Cola or Dr. Pepper.
Other things that you cannot name characters are names like GeorgeLucas, LukeSkywalker and WinstonChurchill.