Johnny is the soldier who is beat up by Meryl in MGS1. You can only hear him by using the Directional Microphone in two different moments during the Plant chapter. The first time happens when you find Ames among the hostages. Ocelot and Solidus will start talking in the room next to you, and Raiden will automatically use the Directional Microphone to hear them. You can control the Microphone during their conversation. Just point it to the bathroom door in the corner and you can hear his monologue. The second moment is when you're using the PSG1 sniper rifle to cover Ema, when she's crossing the Oil Fences. When she gets to the second strut and goes out of your view, equip the Directional Microphone and point it in her direction so you can hear Johnny talking to her.
Johnny Sasaki. You first see him in Metal Gear Solid, once you meet the DARPA Chief. You see him after Meryl rescues you, on the far right, buck nekkid. You see him again after you get caught. He's the guy who makes sure you stay in your cell. Unfortunately, he had very irritable bowels back then too
You all know Johnny is in MGS3 also right? you hear his whole back story after the torture, every time he gives you food pick it up and throw it back, do it three times and a cut scene will start where he talks about how everyone in his family names their first born son Johnny which means the one in MGS is his son or grandchild maybe. It's a pretty funny cut scene
I love this game been a fan since I first played the original on NES (yes I am old LMAO) The Johnny segments are hiliarious. Also just for kicks (don't think there are acheivments for it) but if you hit EE call Octacon and he will yell at you plus call her and she will scold you as well. Those are funny.