According to relevant laws and regulations, the unauthorized use of another person’s portrait for the purpose of profit is an infringement of the portrait rights of the portrait owner. Therefore, if Bilibili produces and disseminates videos that parody Cai Xukun with the purpose of making a profit and actually makes a profit, then it will infringe on his right to portrait. On the contrary, if Station B is not for profit, and in fact it is not for profit, it certainly does not infringe Cai Xukun’s portrait rights.
Of course, the so-called profit-making purpose is not limited to disseminating videos through charging and other methods, but also includes obtaining income by distributing traffic. In today's Internet society, there is a social reality that "traffic is king". Station B releases Cai Xukun's ghost video. If it gets huge traffic, it is very likely to get more revenue. Therefore, whether Station B can be profitable cannot be generalized.
Of course, regardless of whether Station B has infringed on Cai Xukun’s right of portrait, it is indeed suspected of infringing on Cai Xukun’s right of reputation. Because the ghost animal video has devalued his personal image to a certain extent and lowered his social evaluation, which meets the requirements for infringement of reputation rights.
Of course, I would like to add that I am not a fan of Cai Xukun. I am just discussing the matter. No matter how much you hate someone, you can't do whatever you want to do to others. This is the bottom line of a society governed by the rule of law.