diff --git a/src/entities/cards.py b/src/entities/cards.py
index abf164a..2b3be25 100644
--- a/src/entities/cards.py
+++ b/src/entities/cards.py
@@ -2,3 +2,23 @@ CARDS = {
     "fibonacci": [0.5, 1, 2, 3, 5, 8, 13, 21, 34, 55, "?"],
     "tshirt": ["XS", "S", "M", "L", "XL", "XXL", "XXXL", "?"],
 }
+
+class Cards:
+    """
+    Cards class object
+    """
+    def __init__(self, card_type = "fibonacci"):
+        self.card_type = card_type
+        self.cards = []
+        self.create()
+
+
+    def create(self):
+        """
+        Method to create a deck of cards
+        """
+        if self.card_type in CARDS.keys():
+            self.cards = CARDS[self.card_type]
+            return self
+
+        return None
diff --git a/src/entities/person.py b/src/entities/person.py
index bbd4e20..03fb22e 100644
--- a/src/entities/person.py
+++ b/src/entities/person.py
@@ -1,3 +1,5 @@
+import uuid
+
 class Person:
     """
     Person entity
@@ -8,3 +10,12 @@ class Person:
         Person entity initializer
         """
         self.name = name
+        self.uuid = None
+        self.create()
+
+
+    def create(self):
+        if not self.uuid:
+            self.uuid = uuid.uuid1()
+
+        return self
diff --git a/src/entities/room.py b/src/entities/room.py
index e694bbc..012588e 100644
--- a/src/entities/room.py
+++ b/src/entities/room.py
@@ -1,3 +1,5 @@
+import uuid
+
 class Room:
     """
     Room entity
@@ -8,3 +10,31 @@ class Room:
         Room entity initializer
         """
         self.name = name
+        self.uuid = None
+        self.attendant = []
+        self.create()
+
+
+    def create(self):
+        """
+        Method to create a new room object
+        """
+        if not self.uuid:
+            self.uuid = uuid.uuid1()
+
+        return self
+
+
+    def add_person(self, person: uuid.UUID):
+        """
+        Method to add a person to a room
+        """
+        if person not in self.attendant:
+            self.attendant.append(person)
+
+    def remove_person(self, person: uuid.UUID):
+        """
+        Method to remove a person from a room
+        """
+        if person in self.attendant:
+            self.attendant.remove(person)