As an identical twin, Andrew is a mirror image of his older brother. He has spiky black hair and blue eyes. Like the rest of the other characters, he does not always wear the same clothing throughout the series.
Andrew is a polite and soft-spoken boy who is always seen smiling. But, he actually has a split personality. He acts like a good student and boy in front of everyone including his brother, Anthony. But behind all this, he tends to pick on Alexandra and find any chances to make her look bad. Despite the things that Andrew had done to her, Alex still treats him nicely.
There are times when Andrew really does behave nicely. This was shown when Andrew helped Alex to carry the heavy box of toys and blushed when Alex thanked him. The other time was when Andrew attempted to help Anthony to carry the boxes during the preparation of the school's bazaar.
Despite having this kind of personality, Andrew is also a kind and caring brother as he was seen worried for his brother whenever he fell sick or hurt himself.