Moarte is the host of Longbox of the Damned, forever cursed to watch over the eponymous box which is filled with horror-related comics. He is undead, describing himself as "neither living, nor dead", and has no problem siding with either. He seems to enjoy jokes of all kinds, and frequently makes bad puns about the book he is reading. He starts and ends each episode with a hearty bout of laughter, and refers to the viewers as "my children". He knows about Linkara and his show, and vice-versa, but to what level of meta-reality is unknown. Moarte is based, physically, on Lon Chaney's character from the lost film London After Midnight. His voice is a curious mix of stereotypical Eastern European vampire and Marik Ishtar's father from Yu-Gi-Oh: The Abridged Series.

In the most recent series of Longbox of the Damned, "Chain Reaction", Moarte was seemingly replaced by an enigmatic figure known only as "The Host" (also played by Lewis) for the duration of the segments. However, in the final segment "Twilight Zone: #1959", the ending revealed that Moarte had somehow been transformed into the Rod Serling-esque figure. He was transformed back and asked his "children" what they thought of that for a twist ending before closing out with his iconic laughter.

Lewis initially had no plans to introduce Moarte to Atop the Fourth Wall, but he has since had a voiceover cameo from the ghoul and showcased Season 3's new set a few times. A fan maintaining the Ask Moarte tumblr askblog created a backstory for the character, wherein he was once a famous circus magician who killed his rival to obtain the Longbox, and was subsequently sentenced to watch it for all eternity. Lewis saw the post and said he was seriously considering making this Moarte's official origin story.

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