------
## 最终结论
```python
import re

def find_character(s):
    uppercase = re.findall(r'[A-Z]', s)
    lowercase = re.findall(r'[a-z]', s)
    digits = re.findall(r'\d', s)
    special_characters = re.findall(r'[^A-Za-z0-9]', s)
    
    return (uppercase, lowercase, digits, special_characters)
```