Pico is the antagonist of Friday Night Funkin's third week and a supporting character in the seventh week, with plans on him being a protagonist in the game's future versions. Pico is seen as confident, curious, and trustworthy by the people who he considers to be his friends and allies. However, to someone who isn't as close to him, he is seen as aggressive, ruthless, and unstable in nature. Pico is paranoid of strangers, which makes him view them as untrustworthy upon first glance, leading to him being very sarcastic and insulting in conversations, should said strangers wish to speak with him. Despite this, Pico does try to be reasonable to people he doesn't view as nothing more than a threat to him and his allies and is willing to apologize for outbursts caused by his explosive temper to said people.

For his voice, I feel like something along the lines of RecD's Pico (RecD Pico) or Jakeneutron's Pico (Jakeneutron Pico Soundfont) would work.

Of course, please feel free to interpret Pico's voice however you wish.