Shardina Infelicius is a character from the anime Killed Again, Mr. Detective?. Her name has also appeared in some sources as Shardina Inferishiasu or Shardina Infelitious. She is a female character with a youthful appearance, categorized as a teenager. Her visual design includes blonde hair that reaches her hips, often styled in a side ponytail, and purple eyes. Her attire typically consists of a dress, pantyhose, opera gloves, and a choker.

Within the narrative, Shardina is identified as a dangerous and violent criminal. She holds a significant position as a member of a notorious group known as the Seven Old Men. This affiliation establishes her as a formidable antagonist within the story's world, placing her among the most serious threats that the protagonist may encounter. The voice actress who portrays the character has described her as glamorous, gorgeous, mysterious, and expressive, providing insight into her likely demeanor and personality on screen. Her role in the story is primarily that of an antagonist, and her membership in the Seven Old Men suggests she is a figure of considerable power and influence in the criminal underworld of the series. No further reliable information is available regarding her specific background, personal motivations, detailed relationships with other characters, development across the story, or any notable abilities she may possess.