The Flash Season 6 Review: 7 Ups & 2 Downs From 'Grodd Friended Me'

Ups...

7. Hartley's Return

Yes, we've discussed how Hartley's return could have been handled with a more meaningful approach, but that wasn't enough to stop a smile from forming on this writer's face when he saw the return of Pied Piper, those signature gauntlets and Andy Mientus.

Hartley has been such an underutilised asset that the show really could have benefited from a lot over the years, and Mientus really does ace the lovably sarcastic elements of the character, so to see him return (even in such a brief fashion) was a surprise worth waiting for.

Let's just hope this isn't the last we see of him.