A fan of Lana Parrilla and/or her character Regina Mills/Evil Queen on the TV show 'Once upon a time'. Evil Regal is the name that Lana Parrilla gave her fans when asked what they should call themselves.
A condition in which you go too hard core on being an Evil Regal. Every second of every day is consumed by Evil Regal related things. You go everywhere in your Evil Regal shirt and eat nothing but food that contains apples.
Katie: Did you see Nelly? She's totally suffering from Regalsis
Marguerite: Yep, poor thing it's like a wraith sucked her soul and the only thing left was her fandom
Katie: She's so hardcore, and definitely Lanasexual