"Splitter" type emotional vampires are the most similar to what you have described. The "Splitter" type can appear calm and collected one minute, and seem to be a pleasant person to be around, but you have to watch out. Their mood can change quickly, and before you know what happened, they can become emotionally abusive. They are truly real-life Dr. Jekyll/Mr. Hydes.
Victims of this type of emotional vampire often feel like they are walking on eggshells around this type of person. Since you never know what you're going to get with a "Splitter" type emotional vampire, it is difficult to feel relaxed around them, even when they themselves appear relaxed. Their demeanor can change in an instant, and you will be subjected to their anger issues and rage.