He is something like a wandering bard singing strange old ballads and songs on his concertina, from which one can foretell unexpected and sudden transitions from speech to singing. For example, in the middle of a conversation, he may suddenly begin to sing funny songs to the accompaniment of his concertina. Hop Pop also mentions that Wally sleeps under bridges. Initially, Wally reveals that he is biased, calling Anne and Sprig's friendship "disgusting" and "unnatural".