The Gabonese striker joins the Gunners on a long-term deal for a fee of around £55million.
It further strengthens their attack, having swapped Henrikh Mkhitaryan for Alexis Sanchez earlier in the window.
Aubameyang is likely to add plenty of firepower having netted 98 Bundesliga goals in 144 appearances.
But how will the Gunners line up now they have signed Aubameyang in addition to Mkhitaryan? Click the right arrow, above, to find out.