To dream of your brother represents the bond that you share with him. Perhaps you know someone else who also has the same attributes or features that he possesses.
If you do not have a brother and dream that you have one, then this may indicate that you have to recognize certain attributes that you possess. The brother in your dream may represent a very important relationship that you share with someone else.
A brother may also signify devout and inspirational emotions that you harbor. It is also possible that you have trouble surrendering control and power to someone else.
To dream that you are mad or angry at your brother implies that you hold unresolved feelings of rage that you are hesitant to communicate