Eddie turned out to be a hero in the end, when he sacrificed himself to save everyone, but for the rest of season one he was a character he felt tangential to the most interesting parts of the storyline. Rick Cosnett played him likeably enough though.
Just like Eddie, Ronnie sacrificed himself to save Central City. He just edges a place about Detective Thawne however as he had actual superpowers, what with being one half of Firestorm. Plus he’s played by Stephen Amell’s real-life brother, Robbie.
Barry’s dad was a likeable purveyor of platitudes in season one, even though season two inexplicably sent him away for a long stretch. He then finally joined up with Team Flash proper – only to go and die. Let’s hope we haven’t seen the last of John Wesley Shipp on the show.