Spartacus

The duo wrote an episode ("Paterfamilias") of the Starz prequel mini-series Spartacus: Gods of the Arena, for which they also served as story editors. They then returned for the sequel series Spartacus: War of the Damned, again as story editors and writers. Co-writing, in total, four episodes ("The Thing in the Pit", "Mark of the Brotherhood", "Libertus", "Wolves at the Gate").^[1][2][3]

The Flash

This section needs to be updated. (February 2018)

In summer 2014, the brothers were hired as co-executive producers and writers on another DC Comics produced CW series The Flash. The first episode they co-wrote, along with Brooke Eikmeier, is the freshman series' fifth installment, "Plastique". The episode introduces the titular supervillainess.^[1][2][4] The duo co-wrote the first midseason finale, "The Man in the Yellow Suit"; which delves into the mystery of the Reverse Flash.^[5] They co-wrote the series' twelfth installment, "Crazy for You". The episode introduces DC Comics character Linda Park, as Barry Allen's new love interest. The brothers co-wrote the series' pivotal 15th episode "Out of Time"; in which the supervillain Weather Wizard is introduced, and the Flash experiences time travel for the first time. Lastly, they wrote the 22nd installment of the show, "Rogue Air", which featured another crossover with Arrow.

With the commencement of the sophomore season, the brothers were named executive producers; first writing the second episode, "Flash of Two Worlds". It featured the introduction to Golden Age hero Jay Garrick/The Flash. The duo will next pen the seventh installment, "Gorilla Warfare", which featured Gorilla Grodd.^[6] Since then. they've written "The Reverse Flash Returns", "Flash Back", "The Race of his Life", the story of "Escape from Earth-2", the teleplay for "Legends of Today". They became showrunners during Season 2 and in Season 3, they wrote "Paradox", the teleplay for the first part of Invasion!, the story of "The Present", Aaron co-wrote the teleplay for "Attack on Gorilla City" and Todd wrote the story of "Attack on Central City", they wrote the teleplay for "Duet" and "Finish Line" - the Season 3 finale. Aaron stepped down as showrunner and Todd continued on - co-writing the teleplay of "The Flash Reborn", solely wrote the teleplay for the Flash part of Crisis on Earth-X and co-wrote "Enter Flashtime" and the season 4 finale "We are the Flash". Todd became the sole showrunner of the Flash during Season 4 after Andrew Kreisberg's firing and continued to solely showrun the show for season 5.

Post-Split Careers

On August 13, 2018, it was announced that History Channel's historical drama Knightfall was renewed for a second season, and Aaron Helbing had been hired as executive producer, writer and showrunner for the second season, replacing Dominic Minghella.^[7] The series was canceled in May 2020 after two seasons.^[8]

Todd Helbing would go on to write and produce the CW series Superman & Lois.