Freddy Fazbear makes his second appearance in Five Nights at Freddy's 2. He, as with the other three animatronics from the first game, has fallen into disrepair.
Out of all of the original animatronics, Freddy seems to be the least damaged. His appearance seems to have changed slightly for the second game, this being seen best in the first promotional image released by Scott Cawthon, the game's developer (see in the Images tab). In-game, it is explained that he has gone through an attempted retrofit, but it was left unfinished after the management chose to make Toy Freddy.
His overall appearance is unchanged, but small differences are visible - mainly the buttons added to his chest, and the more visible stitching on the underside of his arms. Most notably, however, is the damage on his arms similar to that of Foxy's, showing parts of his endoskeleton. Additionally, his left knee is damaged; with visible wires poking out. His body segment is also smaller and his hat is removable, as it is seen sitting on the floor next to him in the Parts/Service room.
This time around, Freddy has an upper set of teeth, while his head appears slightly blockier. His freckles are gone, his eyebrows are thinner, he has embossed inner ears, far less rounded cheeks, and his upper lips have a deeper gap in the center. His eyes also seem to have been placed deeper within the mask, and his muzzle appears to be smaller. The reason for his disrepair is either from neglect by the old company or the fact that he was simply used for parts, as he was just old and outdated.
Freddy starts moving during Night 2, but is very inactive until Night 3. Freddy starts with the other old animatronics in the Parts/Service room before moving into the Main Hall. He then heads to Party Room 3 to stare into the camera, before standing in the hallway just outside The Office, only a step away from entering.
Freddy is less active than Bonnie and Chica; however, he acts in a very similar manner. Freddy doesn't appear to become active enough to enter The Office until Night 3, as he did in the original. Much like his counterpart, Freddy takes the path down the entrance hallway, entering The Office through said hallway.
When Freddy is in the hallway and the player lowers the monitor or, if Freddy forces it down, Freddy will stand in front of the desk as the lights constantly flicker before he vanishes. The player must put on the Freddy Fazbear Head the moment they see Freddy to avoid imminent death. Delaying or neglecting to don the Head will cause the screen to black out as normal, only for him to return and kill the player after bringing up and lowering the Monitor. He may also forcibly pull down the Monitor or remove the Freddy Head if left on some time after failing to ward him off.
Of particular notice is that Freddy lacks all of his unique tactics from the first game; he can't automatically attack if the player makes a paranoid mistake (lack of doors to close), nor can only he attack when the power runs out (as only the Flashlight can run out of power). Not only that, but he is more easily detected on the cameras and can be seen in the blindspot in the hall. While this can be assumed to be due to his deterioration, it can also be subtle foreshadowing of the second game's nature as a prequel by showing Freddy to be lacking experience. Seeing as his brand-new replacement has similar strategies and weaknesses, the latter appears to be more likely.