Tom Cavanagh has been a part of the main cast of The Flash for three years, while playing a different version of the same character each season.
At San Diego Comic-Con 2017, Cavanagh talked about the experience of playing multiple versions of Harrison Wells and also answered questions about what character he will play in The Flash season 4.
Fans of The CW series can expect that trend to continue into the show’s fourth season, with the introduction of a new Harrison Wells.
Season 4 of The Flash premierse on The CW at 8 PM on October 10.