Forum:Level 61 Meat Popsicle

Yeah so I have no idea how this happened but I was playing Gen. Knoxx as Lilith (1st playthru) and I discovered the secret shrine to Lilith which I had read about- I opened the fridge, and out popped a LEVEL 61 MEAT PUPPET who proceeded to kill me in a second. However, when I foolishly returned, he didn't attack me- I asked no questions and amptied all of my 1260 smg bullets into him and just barely killed him. My DLC was not modded/hacked (bought it straight from gamestop). Is this just a really weird glitch?