Wakka uses speech-mannerisms like "brudda" for "brother" and finishes sentences with "ya?". He begrudges the Al Bhed for what happened to his brother, Chappu, but rationalizes his hatred for Al Bhed not following the teachings of Yevon.

He has a big heart and frequently attempts to cheer the party up, though is not always successful. He tends to goof around with younger members of the group, much to the annoyance of Lulu, who berates him for setting a bad example. Though they bicker, Wakka is close to her, and affectionately calls her "Lu".

Wakka depends on Yevon's religion and guidance making him socially conservative and thus is intentionally kept in the dark about Yuna's half-Al Bhed heritage. Because of his high value in his religion, Wakka is reluctant to participate in anything considered forbidden by its teachings.