Geld features in the spin-off series "The Slime Diaries," exploring daily life in Tempest. This series highlights his gentle, nurturing personality, contrasting his large orc's formidable appearance. Geld frequently spends time with young goblin children, interacting patiently and kindly. These everyday activities reveal a softer side and his willingness to engage with Tempest's younger residents. One notable episode focuses on Geld bonding with a specific goblin child, emphasizing his approachable and protective nature. His presence in these slice-of-life moments adds emotional depth, illustrating his community integration beyond combat. The series uses these interactions to explore his relationships and contributions to Tempest's social fabric.

In the mobile game "That Time I Got Reincarnated as a Slime: ISEKAI Memories," Geld appears in non-canonical event stories like "Mushroom Hazard." This event depicts him in an alternate role as a mummy-like "Terrible Experiment" character, blending mad scientist themes with his original design. This version participates in the game's horror-themed summer event, contributing to its original narrative while maintaining recognizable traits.