Aubameyang hit Arsenal's opener on five minutes with Ainsley Maitland-Niles adding the second on 15 minutes as Unai Emery's side levelled up the tie 3-3 on aggregate after their 3-1 defeat in France a week ago.
Arsenal have missed out on Champions League football for the last two seasons, and their poor away record remains a big concerns. I said to the players today, I am excited about this competition.
Gabon worldwide Aubameyang is more used to featuring in the Champions League than Europe's second-tier competition, but his early impact with a goal and an assist was decisive for the Gunners.
It's hardly surprising that Emery has maintained the shape that was fruitful against Manchester United as Arsenal require goals tonight against Rennes.
After finding the back of the net in the 72nd minute and putting Arsenal up 3-0 against Rennes, Aubameyang broke out a "Wakanda Forever" salute while donning a Black Panther mask.
In the past the striker has worn Batman and Spiderman masks to toast goals - but he explained why this time was a special moment.
"I needed a mask that would represent me", Aubameyang told BT Sport.
"Black Panther.in Africa and Gabon we are called the Black Panthers so it represents me - that's it".
The goals helped Arsenal battle back from a 3-1 first-leg deficit.
The second leg was a bad-tempered affair with four yellow cards shown to each side by referee Andris Treimanis.
Ismaila Sarr scored the third goal for his side last week but the Rennes winger struggled to make a positive impression in the second leg.
"That goal changed a lot of things". It was quite clear to us on the pitch. "It's a learning curve for a club of our level, we don't have the power of Arsenal".