'Prison Break' season 5 spoilers, plot news: Robert Knepper teases what T-Bag will be up to

One of the mysteries that fans would love to know in "Prison Break" season 5 is how T-Bag (Robert Knepper) managed to get out of Fox River.

When fans last saw him, he was still behind bars. The trailer for the revival saw the fan-favorite bearing good tidings to Lincoln (Dominic Purcell) about Michael (Wentworth Miller) being alive but is in a Yemeni prison.

While Knepper would like to keep this bit a surprise, he did tease in a video shared by Kneppedia that fans would want to be excited about the prospect of T-Bag now that he is out and about come "Prison Break" season 5.

"It will be interesting to see what happens if T-Bag makes it to the outside ... What the outside world will look like?" the actor mused, adding that there is a plethora of things T-Bag could be up to.

Speaking about what his character will get to come "Prison Break" season 5, he said, "Will he find some kind of lasting redemption will he have a cathartic experience that makes him humble and gives up this home?"

T-Bag's dealings in "Prison Break" season 5 are a bit of a mystery as it is unknown whose side he will be on in the limited series.

While he was the one who revealed that Michael is not dead as his loved ones think he is, it is rumored that there is more to it than meets the eye.

The writers for "Prison Break" season 5 teased on Twitter that T-Bag will play an "important" role in the new season. "You'll get to see him quite a bit," they hinted. What he will be up to remains to be seen, but it looks like it will involve him getting a replacement hand, which he lost in the first season of the original series. Other than that, T-Bag remains quite the enigma.

"Prison Break" season 5 will premiere in spring next year on FOX.