Ah.
Yes. Leo is taking 500 years to recover from that beating he got from Shredder in the season 2 finale.
I was re-watching the Alien Agenda and I realized just how much I miss the old episodes And I miss Leo's old voice. A lot. JASON BIGGS COME BAAAACK!
And Alien Agenda had so much Leorai, I wanted to hug my computer screen. Leo was showing off for Karai and I was just, YES I ship it so hard. I miss Leorai. I hope we get at least a little more of that in season 3!!!