javascript - How do everyone treat cheating teammates in the project?

Everyone is tired of writing code. Today I want to ask something else. It is also something that all the masters often encounter. The original poster is in the process of fighting monsters and upgrading. Please donate generously. Thank you very much
I meet this kind of people

• We call him Serious Brother, because in fact, let’s not talk about the technology, but he is very good at talking. He can tell the product manager to change the requirements, he can fool his colleagues into writing code for him, and he can rely on his colleagues for side projects, but Always give people an honest image

• I always told myself to remember to have too much business contact with him when I was dividing my work, but by chance, Pianpian got involved by himself. No, this made the original poster miserable

• The poster is a low-end player, but the serious brother is a mid-to-high-end player. There are too many pots for him, so the poster can only silently make up for the mistakes and just learn from it

• The project is about to be tested. The interface data provided by this guy is always wrong. When the poster took a look, it turned out that this guy directly changed the database manually

• What the hell, what should I do?