The Kappa emoticon is now fully ingrained into Twitch culture, and is generally used as an eyeroll or a sarcastic response. It’s also used to spam chats.
Everyone has access to global Twitch emotes. All you have to do to use one of the global emotes is to click the little smiley face icon in the chat box and choose your emoji
The channel emotes is where Twitch truly stands out from all other social platforms. You get custom channel emotes when you subscribe to a twitch channel.