"Simple, but brilliant"

I met this guy in one of the communities, and here what I can say about him 1. He is responsive 2. He always comes to the rescue 3. He has simple but brilliant content in X 4. He is well versed in the market and retro. 5. He is smart, and I enjoy communicating with him. 6. Productive researcher 7. Good teamate I think highly of him because he always helped me and came to my aid. He literally became my mentor. Especially when I had problems with Union he came to the rescue