A member of Mephistophiles' Followers and anti-antagonist. A ghost doll that constantly laughs and giggles, unbearable, and loves rice. She makes silly pranks that can often leave (a) person or people frustrated with burning anger. Even when confronted about this, she laughs it off, loving the reaction of people being frustrated, angry, hurt, confused, irritated, and/or furious. Her parallel, Elasticboy, is the only one who doesn't show positive or negative emotions, leaving a blank face out of confusion of trying to grasp the logic. When she was confronted, she pulls everyone's strings of emotions, much to her entertainment as she laughs and giggles. Elasticboy, who still doesn't get it, simply shrugs off the entire prank Rena has displayed numerous times, doesn't get the joke, and displays logic rather than jokes. Rena, who is now getting furious, doesn't know nor realize that Elasticboy has autism, prompting her into a state of absolute rage until she was defeated in battle. Rena, feeling lost and neglected once more just like her previous family, the ones she murdered due to their constant sick, twisted pranks, takes her leave and promises to never return to cause havoc, never to be seen again.