The Dream Eater that runs up to him may be unfamiliar, but it isn't colored like a Nightmare. Also, unless licking can do damage (it can't), it's not hostile.

It's followed by a voice and, eventually, a person. "I've told you not to do that to - oh. It's you. Weren't you gone? ...And older?" Even doesn't quite recognize him, though. Not just yet. In his defense, it's been a busy few months.