# THE RED UNDERLINE

Messerschmitt Bf 109 silhouette · read the aim.

Character · Fictional · Established

Stable ID: `margin-aces-ace-1` · Revision 1 · Updated 2026-10-30

Context: [Margin Aces](/field-guide/collections/margin-aces/)

[Web page](/field-guide/entities/margin-aces-ace-1/) · [JSON record](/field-guide/entities/margin-aces-ace-1/record.json)

## At a glance

- The Red Underline is the first deliberate mark across an otherwise open sheet. Its patient, narrow aim makes it a tutor in timing: the threat becomes easier to read once you stop chasing the silhouette.

- Fictional NPC · not a historical pilot, commander or combat record.

## Appearances

- [Margin Aces encyclopedia](/gamelab/projects/marginaces/) (context: [Margin Aces](/field-guide/collections/margin-aces/))

## Dated changes

- 2026-10-30: Added from the named source to the Field Guide.

## Open questions

- Which parts of this entry are historical, and which belong to the game? The Messerschmitt Bf 109 is a historical aircraft design. This named ace, its page assignment and its two-phase attack pattern are fictional.

## Sources

- [Margin Aces encyclopedia](/gamelab/projects/marginaces/)

## Portrait

![A blue-ink Messerschmitt Bf 109 viewed from above, labelled THE RED UNDERLINE.](/field-guide/assets/portraits/catalog-boss-models-margin-aces-ace-1-card-v1-1200.webp)

Native Messerschmitt Bf 109 sprite assigned to THE RED UNDERLINE, Page 1. THE RED UNDERLINE is a fictional game opponent.

[Download original](/field-guide/assets/portraits/catalog-boss-models-margin-aces-ace-1-card-v1.png) · [Margin Aces native aircraft sprite](/gamelab/projects/marginaces/) · v1 · SHA-256: `ccb301778dec22b0dcc318b9ac87d250c4d48400c07a1b708b6dc1f2a2a40a21`