Board Thread:Episodic and Issue Discussion/@comment-47881-20130303202540/@comment-1038387-20130304204952

The first Red Beetle had no allegiance to the Reach. It was the original Black Beetle (not YJ ' s Black Beetle, who is actually Dawur); he acquired another scarab and changed to red armor.

The second Red Beetle was also not a member of the Reach; she was Sarah Butters, a sort of female Ted Kord, who joined the Justice Society shortly before the 2011 reboot. She was fun, I wish we could see more of her.

This does not mean a Red Beetle won't appear; it's just that the presence of a Red Beetle (or two) in the comics is any guarantee he'll show up. A Reach soldier in Red, called Red Beetle, is just as likely to show up as White Beetle, Yellow Beetle, Orange Beetle or Purple Beetle.

See here for Red.