Kuuderes often speak in a calm monotone and seem unaffected by the world around them. They never seem to be overly happy, excited, or surprised - just as they never appear sad, annoyed, or angry. Extreme examples may even seem to be completely emotionless. It is used to describe characters who always remain calm and composed. Though they act serious on the outside, they often have a very good, sarcastic sense of humour. They tend to have deep love for someone (they have a good personality when you know them ) but are afraid to show it too often because they view it as a weakness, either because of who they are or because of the situation they are in. More often than not, they come off as emotionless, acting very cold, blunt and cynical.
Type 3 — Mood-Swinger: Alternating between 'kuu-' and 'dere' persona depending on mood. What controls the mood? Some may have clearly defined Berserk Buttons. Companions might learn how to manipulate this to their advantage. Others might switch moods at what seems to be random moments, which can be very unnerving or confusing to those nearby. Some might contend that this version isn't 'kuu-' (cool) enough to qualify as a kuudere, and might place them in some other category.