"carefree person outside, serious person inside"

I met Ocid in a Telegram group called SAD. He is a relaxed person who often jokes with other group members when discussing daily life. He sometimes shares knowledge that he understands and often makes conversations more lively when interspersed with jokes that often make other members laugh. But on the other hand, he is also a very serious person when discussing a project that looks very promising among a pile of other projects. He often looks for alpha or "early" in a project that looks promising. It's nice to be able to meet and be friends with him.