As he crosses the road, a truck runs him over, but Lewis uses the occasion to possess the entire truck, reshaping it in his image, as the terrified driver, Rooster, barely escapes with his life, before slamming the gas pedal.

He then uses a few petals from Vivi's flower to revitalize his shattered heart locket, then absorbs a table with a coffee cup on it and sets off, accompanied by a few Dead Beats. He lovingly picks Vivi's flower up and wrathfully crushes Arthur's underfoot, showing that his desire for vengeance has not weakened during his inactivity. Lewis notices the discarded flowers Shiromori grew using Arthur and Vivi's essence. Shiromori survives his assault and prepares for a confrontation, but ultimately seems to decide that tracking down Mystery is more important and escapes underground. While she manages to find Mystery's essence and grows a flower tied to his being, she reawakens Lewis' dormant spirit in the process, who attacks her. Sometime later, Shiromori's search for Mystery leads her to the former location of The Mansion. As the van drives off into the night, the mansion vanishes along with him. Resuming back to his human form, Lewis sheds a single tear and disappears. Lewis explodes in a rage, but they escape the fireball, leaving him alone with his literal broken heart.ДЄs the van drives off, Lewis opens the 'heart' (revealed to be a locket) to reveal a photo of him and Vivi together. They reach for each other, though in vain, and the heart falls to the ground, breaking and turning from its golden glow to an icy blue. However, Arthur pulls her away at the last minute. Lewis stops short, remembering his feelings for Vivi, though she appears not to recognize him, and tries to give her his heart. Just as Lewis has Arthur cornered, Vivi jumps in between the two. He points to Arthur ominously in sync with the lyric 'It's you I hate the most', showing his grudge against him, then forms his spectral pompadour and begins chasing after him. The coffin opens to reveal Lewis in his ghost form, with a golden beating heart-shaped object over the left side of his chest. While Vivi and Mystery somehow land in the kitchen, Arthur finds himself in a deep pit with a coffin and several unlit torches. (The purple lightning coursing through the dashboard as this happens indicates that it's Lewis' handiwork.) Once inside, the team is 'Greeted' by Dead Beats, Attacked by a possessed suit of armor, and Frightened by the Living Portraits, one of which triggers a trapdoor. Months later, the team's van breaks down near a large mansion. As he tried to turn back, Arthur became possessed by a malicious spirit and pushed him off the cliff edge, leading to his death. However, Lewis only found an empty pit filled with stalagmites, the bottom of which Vivi's path led her to. Upon splitting up, Vivi went one way, while Lewis, Arthur, and Mystery went another.

On one fateful journey, the team entered an ominous-looking cave. Lewis was formerly a member of the Mystery Skulls Paranormal Investigation team. He clearly still harbors tender feelings towards Vivi, even in death, and he seems regretful after dropping Arthur to his supposed death in 'Hellbent,' even though he believes Arthur killed him intentionally. However, Lewis still seems to be capable of human emotion. Lewis will stop at nothing to get revenge on his murderer. He seems to be unaware that Arthur was possessed and most likely assumes Arthur did the deed out of malicious intent, hence his extreme hatred towards Arthur. However, after a possessed Arthur killed Lewis, he's now a vengeful and enraged ghost. Lewis was described as a kind person in life and was in love with Vivi in an active relationship. Lewis wears a black suit, the lapel resembling bat wings, a white dress shirt with a magenta pink tie, black trousers, and black dress shoes.

Lewis has magenta, flaming hair, a jaw-less skull that levitates in place, 3 ribs that stick out on both sides of his chest, hands resembling gloves from the electronic music duo Daft Punk. Lewis wore a purple vest, a white dress shirt with a magenta ascot, dark purple jeans, and purple sneakers. Lewis had purple hair, a square face, tan skin, and a hook nose. He also has bangs, which resemble an exaggerated pompadour. Lewis has a muscular body, broad shoulders, and is very tall.

Lewis mystery skulls music video