Question: Besides voice acting in the Warcraft franchise, Liam O'Brien has also held what jobs?
Sentence (from "Voice acting in the United States"): Voice acting is needed in animated film, or when the character represented does not appear visually in the action; when the actor playing the part is unable or unwilling to speak in it; when a character breaks into song, with a singer's voice substituted; or when a boy's voice part is spoken by a Woman or by a Girl, or by a Man or a Boy with a high-pitched or low-keyed voice.
Relevant evidence: No