other people. Chaotic evil characters do not work well in groups because they resent being given orders and usually do not behave themselves unless there is no alternative. Examples of this alignment include higher forms of undead (such as liches), violent killers who strike for pleasure rather than profit, demons, red dragons, and orcs. Unaligned Creatures not sapient enough to make decisions based on moral choices, but operating purely on instinct, are described as "unaligned". Sharks are savage predators, for example, but they are not evil: they have no alignment. The use of "unaligned" for creatures was introduced in the 4th edition, and retained in 5th edition. Legacy The D&D alignment system is occasionally referenced as a system of moral classification in other contexts. Salon television critic Heather Havrilesky, while reviewing the HBO television series True Blood, analyzed the program's characters in terms of D&D alignments and identified protagonist Sookie Stackhouse as chaotic good, her vampire boyfriend Bill Compton as lawful neutral, Eric Northman as lawful evil, and Lafayette Reynolds as chaotic neutral. In "Hostiles and Calamities", the 11th episode of season 7 of The Walking Dead television series, the character Eugene Porter makes a reference to the D&D alignment system when describing himself as "...not good. I’m not lawful, neutral, or chaotic." The alignment chart Internet meme humorously categorizes various items—often characters from works of pop culture—in a three-by-three grid. The system has also been used in research into how people create virtual avatars in the digital world. For example, the computer role-playing game Neverwinter Nights 2 inherits the D&D alignment system and researchers have used the NW2 avatar creation process to show that American undergraduate students tend to select avatars that are similar to their own moral values. Zachary Pilon, for Comic Book Resources, commented that alignment in 5th Edition Dungeons & Dragons is now "more of a storytelling tool" than something with "mechanical benefits", adding that "the history of the mechanic means that Wizards of the Coast is unlikely to ever remove it in entirely, but the current nine options are outdated and should either be improved or changed outright". Pilon highlighted that "the variety of ways each individual alignment can be interpreted or justified can lead to a single character being viewed as several alignments, with each being just as appropriate as the other. While this is alright when it comes to placing favorite movie or