Improvisation on the Fly (CSC)

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Actually, improvisation is acting or speaking extemporaneously (on the fly), making up things as one goes along, something that most DMs are always doing, using a few prepared notes. But what happens when the DM needs to create and role-playa character without any preparation time?
First of all, don't interrupt the game to make up a character. The DM doesn't need to have the character's full pedigree to give him a fair role-playing treatment. Quickly make a few notes about the character, those things that are immediately apparent to the characters—physical appearance and manner of speaking, and maybe his name (or what he says to be his name).
If the DM is not comfortable making up these items on the fly, he can rely on dice tables, ones that he personally creates in advance. The DM should make three tables, with eight entries on each table. The first table contains names for potential NPCs (like Derek the Bold, Rhonda Wind slayer, Old Drayfus, and so on). The second table contains roughed out personalities, including personality traits and behavior. The third table is a list of appearances, including clothing, physical features and possessions.
When the DM needs an NPC description in an instant, he can select or roll dice to obtain an individualized NPC description. Skills and other features are added as needed for the NPC to fulfill his purpose. When time permits, the DM can replace any names or unique descriptions taken from the table.