The logo for the in-unverse organization "[[Rhine Lab (Arknights)|]]" in [[Arknights]]. Displayed as an infinity symbol ∞, with + and - signs inside the loops.

h4. Rhine Lab operators
* [[Saria (arknights)|]]
* [[Ifrit (arknights)|]]
* [[Mayer (arknights)|]]
* [[Ptilopsis (arknights)|]]
* [[Silence (arknights)|]]
* [[Muelsyse (arknights)|]]
* [[Magallan (arknights)|]]