<Ul> <Li> Neil Patrick Harris as Count Olaf , an actor determined to claim the Baudelaire fortune for himself . He has one eyebrow and a tattoo resembling an eye on his left ankle , which is frequently used to identify him when he is disguised . </Li> <Li> Patrick Warburton as Lemony Snicket , the narrator tasked with explaining the events during the lives of the Baudelaires . </Li> <Li> Malina Weissman as Violet Baudelaire , the eldest Baudelaire sibling and an inventor talented in mechanics . </Li> <Li> Louis Hynes as Klaus Baudelaire , the middle Baudelaire child , interested in literature and books . </Li> <Li> K. Todd Freeman as Arthur Poe , the family banker and executor of the Baudelaire parents who is in charge of placing the Baudelaires in the care of a suitable guardian . </Li> <Li> Presley Smith as Sunny Baudelaire , the infant child of the Baudelaires with unnaturally strong teeth . Tara Strong voices Sunny 's babbling , the meaning of which is often translated in subtitles . </Li> <Li> Lucy Punch as Esmé Squalor , a wealthy financial advisor , who becomes an ally and love interest for Count Olaf . </Li> <Li> Avi Lake as Isadora Quagmire , Duncan and Quigley 's sister who loves writing poetry . </Li> <Li> Dylan Kingwell as Duncan Quagmire , Isadora 's brother . Duncan is a keen journalist . </Li> </Ul>
who played sonny in lemony snicket 's a series of unfortunate events
Presley Smith