Marvel's Iron Fist Trailer Breakdown: 20 Things You Need To See
7. Steel Serpent
This mysterious message doesn't have a lot of context to it, but we do at least know to whom that symbol belongs: it's the sign of Davos, aka the Steel Serpent.
It first cropped up in Daredevil Season 1, on the heroin packs Gao was selling, so there's a clear connection to be made between the characters there. Davos is the son of Lei-Kung, the immortal trainer of all Iron Fists, and becomes a sworn enemy of the people who hold that title - including Danny Rand. We don't know if he'll turn up in Season 1 - he could even be hiding in plain sight here, under a different character name - but he'd make for an effective overarching villain, existing in the shadows here and emerging as a bigger threat either at the end or in a potential Season 2.