Deadpool & Wolverine Trailer Breakdown: EVERY Hidden Detail

12. Copper Heads

When the duo leave the donut joint, a neon-lit sign can be seen behind them reading "Copper Heads." 

This could very well be a reference to three different Marvel characters who've gone by the moniker Copperhead, most likely Davis Lawfers, a Captain America villain who was a member of the Serpent Society.

Given that the next MCU film after Deadpool and Wolverine will be Captain America: Brave New World, which is widely expected to feature the Serpent Society, it's most likely not a coincidence that a member of the group is getting a sly namedrop in this movie.