diff --git a/Makefile b/Makefile
index f683f14..fecc47a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 NAME = ircserv
 
-SRC = main.cpp Server/Server.cpp
+SRC = main.cpp Server/Server.cpp Client/Client.cpp
 
 HEADERS = Server/Server.hpp
 
diff --git a/User/User.cpp b/User/User.cpp
new file mode 100644
index 0000000..c9c2049
--- /dev/null
+++ b/User/User.cpp
@@ -0,0 +1,65 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   User.cpp                                   :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: aortigos <aortigos@student.42malaga.com>    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/05/07 10:22:52 by aortigos          #+#    #+#             */
+/*   Updated: 2026/05/07 10:22:52 by aortigos         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "User.hpp"
+
+//////////////////
+// Constructors //
+//////////////////
+
+User::User()
+{
+    // std::cout << "User default constructor called" << std::endl;
+}
+
+User::User(const User &other)
+{
+    *this = other;
+    // std::cout << "User copy constructor called" << std::endl;
+}
+
+User& User::operator=(const User &other)
+{
+    if (this != &other)
+    {
+        // Copy attributes here
+    }
+    // std::cout << "User copy assignment operator called" << std::endl;
+    return (*this);
+}
+
+User::~User()
+{
+    // std::cout << "User destructor called" << std::endl;
+}
+
+// Getters
+
+int         User::getFd() const             { return (this->fd) };
+std::string User::getNick() const           { return (this->nick) };
+std::string User::getUsername() const       { return (this->username) };
+std::string User::getRealname() const       { return (this->realname) };
+std::string &User::getBuffer()              { return (this->buffer) };
+bool        User::isAuthenticated() const   { return (this->authenticated) };
+bool        User::isRegistered() const      { return (this->registered) };
+
+
+// Setters
+
+void    setNick(std::string nick)           { this->nick = nick; }
+void    setUsername(std::string username)   { this->username = username; }
+void    setRealname(std::string realname)   { this->realname = realname; }
+void    appendBuffer(std::string buff)      { this->buffer = buff; }
+void    clearBuffer()                       { this->buffer.clear(); }
+
+void    setAuthenticated(bool value)        { this->authenticated = value; }
+void    setRegistered(bool value)           { this->registered = value; }
\ No newline at end of file
diff --git a/User/User.hpp b/User/User.hpp
new file mode 100644
index 0000000..da62791
--- /dev/null
+++ b/User/User.hpp
@@ -0,0 +1,60 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   User.hpp                                   :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: aortigos <aortigos@student.42malaga.com>    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/05/07 10:22:52 by aortigos          #+#    #+#             */
+/*   Updated: 2026/05/07 10:22:52 by aortigos         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef USER_HPP
+
+# define USER_HPP
+
+# include <iostream>
+
+class User
+{
+    private:
+        int         fd;
+        std::string nick;
+        std::string username;
+        std::string realname;
+        std::string buffer;
+        bool        authenticated;
+        bool        registered;
+
+    public:
+        User();
+        User(const User &other);
+        User& operator=(const User &other);
+        ~User();
+
+
+        // Getters
+
+        int         getFd() const;
+        std::string getNick() const;
+        std::string getUsername() const;
+        std::string getRealname() const;
+        std::string &getBuffer();
+        bool        isAuthenticated() const;
+        bool        isRegistered() const;
+
+
+        // Setters
+
+        void    setNick(std::string nick);
+        void    setUsername(std::string username);
+        void    setRealname(std::string realname);
+        void    appendBuffer(std::string buff);
+        void    clearBuffer();
+
+        void    setAuthenticated(bool value);
+        void    setRegistered(bool value);
+};
+
+#endif
diff --git a/tasks.md b/tasks.md
index 5e54591..c934488 100644
--- a/tasks.md
+++ b/tasks.md
@@ -7,6 +7,23 @@ You can try connect IRC server with
 ```bash
 nc localhost <port>
 ```
+---
+
+### User
+
+Represents a connected IRC client.
+
+| Attribute       | Type     | Description                                    |
+|-----------------|----------|------------------------------------------------|
+| `fd`            | `int`    | TCP s-ocket file descriptor                    |
+| `nick`          | `string` | IRC nickname                                   |
+| `username`      | `string` | Username                                       |
+| `realname`      | `string` | Real name                                      |
+| `buffer`        | `string` | Incoming data buffer, accumulates until `\r\n` |
+| `authenticated` | `bool`   | `true` after correct `PASS`                    |
+| `registered`    | `bool`   | `true` after `NICK` + `USER` received          |
+
+**Registration flow:** `PASS` → authenticated → `NICK` + `USER` → registered → client ready
 
 ---