*Lucinia Porter is the overarching protagonist of the Meta Runner series and the deuteragonist of Meta Runner: Source. She first appeared in Wrong Warp as one of the Meta Runners of the main lineup of TAS Corp. alongside her lover Belle Fontiere.

Throughout Season 1, it is shown that Lucinia went missing 2 years prior to the show.

Flashbacks and archived security footage revealed that she was involved in an accident during Project Blue's development and was recovered by Lucks, who kept her disappearance a secret and led everyone to believe she had gone missing or was dead.

When Belle found out about her involvement in Project Blue, she originally thought that Tari had murdered Lucinia due to comparing Tari's affiliation with the Project Blue logo.

In Fatal Error, Lucks revealed that she survived the explosion. Tari confirmed this and explained that Dr. Sheridan tried uploading an advanced A.I. iteration into her Meta Runner arm, but accidentally pushed the neural uplink that caused the upload to end in catastrophic failure as the explosion physically scarred Sheridan and Lucinia, with the latter having her consciousness shattered and rendered brain-dead.

Some of her fragments were lost in the server while the others went into Sheridan's A.I., the Turbo Assisted Rapid Intelligence Program, otherwise known as T.A.R.I., meaning that Tari herself is the A.I. program that Sheridan created to help Lucinia until some of her consciousness became attached to Tari, allowing her to exist in the real world through an artificial body.

Lucinia is a woman with bright, long purple hair, pale skin, and a slender build. She wears a black tank top, black shorts with a navy hoodie tied around her waist, including black tube socks and black leather boots, and a necklace with a sky-blue pendant. Her meta runner arm is on her left.

In the second season, she does not have the jacket and her shorts have two white stripes on the sides; most of the time she is seen in the TAS Corp. server, appearing as a purple glitter.

In the final season (and when Tari saw her in Tempest), Lucinia's Meta Runner arm is gone and she has third degree burns on her left arm and shoulder, with lesser burn scars on her neck and left cheek. The strap on her left arm also appears to be affected from the burns.

In a flashback shown in "Soft Lock", she lacks self-esteem and calls herself an "old dog" teaching new tricks to Belle by showing her a new glitch, saying that if she can't achieve the Ultra Jump Mania record, Belle can. She also mentions how she hasn't had a press conference in a while unlike Belle and Masa. Her low self-esteem were one of the core reasons she volunteered to be a test subject for Project Blue. She is shown to be very kind as she is complimenting Tari's abilities.

Lucinia is also shown to be very friendly as when she meets Tari for the first time, she discovers Tari has been in her head, seeing her memories, she was not angry. Instead she was glad Tari was getting something in return from helping Lucinia win games. The two immediately hit it off. Before Sheridan pushed the neural uplink too hard and caused the explosion she hugs Tari, where the two promise to find each other again.

Lucinia is also shown to have no tolerance for anything bad said about her loved ones. This is seen when the first thing she does is smack Evelyn across the face after hearing her disrespect Tari.*