

Actor portrait · TMDB ↗
Character viewing guide
Cassie LangCharacter guide · Kathryn Newton
Another perspective within the family adventure.
Find a starting pointBehind the name
Meet Cassie Lang
Kathryn Newton portrays Cassie Lang in Quantumania, the Ant-Man film that takes its central family into the Quantum Realm. This performer-specific profile follows Newton’s catalog records while keeping the earlier Cassie portrayals separately accessible.
Official source · Disney Movies ↗Notice what the next generation asks
Watch what Cassie wants the people around her to recognize and how they respond. The exchanges within a family give the unfamiliar setting personal stakes beyond its visual scale.
Cassie Lang, from the Marvel Cinematic Universe.
Your first watch
Where to start
Quantumania introduces Newton’s portrayal. Use its film guide for the earlier Ant-Man and ensemble context; the existing Cassie profiles remain separate records.
- 01

Ant-Man and the Wasp: Quantumania
2023 · Open the title guide ↗
Current catalog
Doomsday context
Kathryn Newton is listed among the announced performers for Avengers: Doomsday.
Read the cast sources ↗Follow the screen credits
Catalog appearances
2 entries · release order
These are the existing catalog records, including supporting roles, cameos and other formats. This list is not a required watch order or proof that every appearance shares one continuity. Future entries may change.
2023
- Ant-Man and the Wasp: Quantumania
February 15, 2023
2026
- Avengers: Doomsday
December 16, 2026 · Supporting
Keep identities distinct
Other profiles
Other catalog profiles named Cassie Lang.
Sources & context
About this profile
Profile information checked 2026-11-08. Viewing suggestions are editorial guidance. Appearance records and identity labels come from the existing catalog.
Disney Movies · Film synopsis and context ↗
TMDB · Kathryn Newton portrait ↗
Background artwork: Ant-Man and the Wasp: Quantumania. The portrait shows the performer.
How this catalog is put together ↗