==== Appearances in Chapters 1-5 ====
Knuckles makes his first appearance in the second part of Chapter 3, when he crashes through the attic window of the Hayes mansion, and sneaks up on Espio, startling him into falling on a pile of old antiques. After helping him up, Knuckles explains to Espio he is here because he sensed a Chaos Emerald there, and is using the Dark Blue Chaos Emerald as a "metal detector". Espio explains he is here because the owner of the mansion believes it is haunted, and he and Vector have to figure out what made her think that. Knuckles points out a banging sound coming from an old dresser, and Epsio opens it to find three baby chao, one black, one gray, and one white. After this, he and Knuckles conclude that that must be why Ms. Hayes thinks her house is haunted.
After he and Espio explain what they found in the attic, they learn that the chao have imprinted on Espio. He is among those that laugh as he tries to escape them, without much prevail.
The third part of Chapter 3 is taken from Knuckles POV in the 2nd Person. He is glad that he is not the one getting followed by the baby chao, not because he doesn't like chao, but because he prefers to be alone. He then decides to start looking for the Chaos Emerald in the mansion's basement.
Even though there is no light in the basement, Knuckles uses the Dark Blue Chaos Emerald he has as a flashlight. He sees the stairs as unstable, and uses his gliding ability to get down instead. He is able to get down, but crashes into a box, injuring himself. The Chaos Emerald starts glowing, and he takes that as a sign another one is nearby, and decides to look around. He finds quite a bit, but no sign of the Chaos Emerald. He turns the corner to find a lot of spider webs, some of which Vector may have crashed into earlier. Sensing that the next Chaos Emerald is somewhere behind the webs, he looks for something to cut the spider webs with, but doesn't find anything useful. He then decides to just use his hands.
When he tries to punch the spider web with his hand, it gets stuck, and tries to pull it out, but his foot ends up getting stuck. He is approached by a massive spider a moment later
(he mentions it is about six times his size), who tries to inject its poison into him, but by punching the spider with his free hand, Knuckles manages to free himself, and escape the basement.
Once upstairs, Knuckles finds Ms. Hayes' granddaughter standing by the door. She tells him he shouldn't be down there, because of the spiders, and that is
More coming soon!