Catherine Nichols is a character mentioned in The Wedding. She is 89-going-on-90 years old and is getting married, according to said episode. According to Drake and Josh, Catherine is extremely mean, and she collects hair from people she does not know well at all. It can be speculated she was furious with them for not arriving on the wedding on time and for not bringing the wedding cake, therefore, they don't get the beach house. She is Papa Nichols' sister.