This could be considered a major spoiler for both the Shingeki no Kyojin manga and upcoming seasons of the Attack on Ttitan anime. So read on only if you want to know!
In Chapter 97 of the Attack on Titan manga, we get the reveal that the popular fan theory was correct: the mysterious Amputee-kun is none other than Eren Jaeger - now going under the name Eren Kruger!
As you can see in the artwork below, Eren has been given a much different look, and fans are certainly buzzing about it. The thin beard/moustache is of particular concern, with some fans swooning at Eren showing signs of awkward maturation.
Attack on Titan season 2 has finished up on Toonami; Chapter 97 of Shingeki no Kyojin is now out.