Omnilingualism is the ability to understand and utilize verbal or non-verbal communication without any prior knowledge of the langauge.
- Traveler is the only known character with this ability.
Traveler is observed to speak English, Swedish, Hindi, and Dzongkha, the language of the Kingdom of Bhutan. He is also able to effortlessly blend in with the natives of Bhutan, moving easily among them, due to his understanding of non-verbal communication.
- At one point, Traveler mentions that a group of yaks "didn't have much information, but did provide me cover". In an interview, Yule Caise said, "Traveler can communicate with animals as well. Though he's limited to the degree of their consciousness and communication."