3 DCU Movies and TV Shows You Must Stream Before Milly Alcock Soars as Supergirl

If you are counting down to Milly Alcock suiting up as Kara Zor-El, here is the short version: the new DCU already has a few key stops worth hitting first. Supergirl is said to be a mostly standalone adventure pulled from Tom King’s excellent comic Woman of Tomorrow, but the broader sandbox she is flying into has been sketched out elsewhere. If you want the clearest runway into this version of DC, start here.

• Creature Commandos (2024)
  James Gunn ’s DCU officially kicks off with an animated swing, which is a fun (and slightly chaotic) way to plant the flag. No Kara here, but the show lays down the franchise ’s vibe: monsters, misfits, and black-ops oddballs sharing space with capes. It is action- forward, snarky without being hollow, and more character-driven than the title suggests. That mix is the tonal compass for everything else coming, including Supergirl.

  "Yes, Creature Commandos is all set to come out in 2024. There have never been any delays, thank goodness. Any info otherwise is a well-intentioned mistake or misspeaking."

  That was Gunn in late 2023, swatting away delay rumors. The takeaway: this animated opener was always meant to be the DCU’s first brick.

• Superman ( 2025 )
  If you only watch one thing before Supergirl, make it this. The film introduces David Corenswet as Clark Kent and launches the DCU’s live-action era. It also gives you a better feel for Krypton and the mythology Kara comes from. Expect your first meaningful on-screen link between this Superman and Milly Alcock’s Kara, which is important context for how their dynamic works going forward. Supergirl is reportedly set after the events of Superman, so this is the most direct setup for her movie.

• Peacemaker (2022)
  Yes, it started in the old continuity, and yes, it still matters. John Cena’s Christopher Smith is sticking around in Gunn’s DCU, and Season 1 is your primer on who this guy is beyond the helmet and the body count. It is violent, funny, unexpectedly tender in spots, and very much in line with the storytelling style Gunn is now applying across the new slate. Supergirl is not directly tied to Peacemaker Season 1, but the show helps you speak the DCU’s language. Also worth noting: Gunn was still publicly calling Cena "our Peacemaker" in April 2026, so the character is not going anywhere.

Bottom line: Supergirl may chart her own course across the stars, but these three projects give you the clearest map of the terrain. Creature Commandos sets the tone, Superman anchors the core heroes and Kryptonian lore, and Peacemaker widens the world with a character who carries over.

You planning to knock these out before Kara hits theaters? I am.