Symbi-morphs are very similar to the Pleasure Gelf, but seems to have actual shape-shifting abilities. Its neutral or "true" form is an androgynous humanoid with a black and white matrix colour scheme. It has five telepathic hooks which it can fire into someone to read their mind and shape-shift accordingly, with each additional hook making the connection more powerful. Even a single hook was enough to access the subject's subconscious; Lister is able to use a symbi-morph bonded to him with a single hook to not only determine the nature of the symbi-morphs based on information he had subconsciously put together, but also reveal the subconscious doubts he had harboured about the mission to rescue an alternate version of himself who turned out to be a homicidal sociopath.