diff --git a/bukkit/src/main/java/dev/xhyrom/lighteco/bukkit/BukkitLightEcoBootstrap.java b/bukkit/src/main/java/dev/xhyrom/lighteco/bukkit/BukkitLightEcoBootstrap.java
index eafc476..caddaec 100644
--- a/bukkit/src/main/java/dev/xhyrom/lighteco/bukkit/BukkitLightEcoBootstrap.java
+++ b/bukkit/src/main/java/dev/xhyrom/lighteco/bukkit/BukkitLightEcoBootstrap.java
@@ -8,6 +8,7 @@ import dev.xhyrom.lighteco.common.plugin.bootstrap.LoaderBootstrap;
 import dev.xhyrom.lighteco.common.plugin.logger.PluginLogger;
 import dev.xhyrom.lighteco.common.plugin.scheduler.SchedulerAdapter;
 import lombok.Getter;
+import org.bukkit.OfflinePlayer;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.java.JavaPlugin;
@@ -15,6 +16,7 @@ import org.bukkit.plugin.java.JavaPlugin;
 import java.io.InputStream;
 import java.nio.file.Path;
 import java.util.List;
+import java.util.Optional;
 import java.util.UUID;
 
 @Getter
@@ -59,6 +61,11 @@ public class BukkitLightEcoBootstrap implements LightEcoBootstrap, LoaderBootstr
         return this.loader.getDataFolder().toPath();
     }
 
+    @Override
+    public Optional<UUID> lookupUniqueId(String username) {
+        return Optional.ofNullable(this.loader.getServer().getOfflinePlayer(username)).map(OfflinePlayer::getUniqueId);
+    }
+
     @Override
     public boolean isPlayerOnline(UUID uniqueId) {
         Player player = this.loader.getServer().getPlayer(uniqueId);
diff --git a/common/src/main/java/dev/xhyrom/lighteco/common/command/abstraction/Command.java b/common/src/main/java/dev/xhyrom/lighteco/common/command/abstraction/Command.java
index fb35254..9460863 100644
--- a/common/src/main/java/dev/xhyrom/lighteco/common/command/abstraction/Command.java
+++ b/common/src/main/java/dev/xhyrom/lighteco/common/command/abstraction/Command.java
@@ -18,9 +18,9 @@ public abstract class Command {
 
     @Getter
     @NonNull
-    private final List<Argument> args;
+    private final List<Argument<?>> args;
 
-    public Command(@NonNull String name, @Nullable String permission, @NonNull Argument... args) {
+    public Command(@NonNull String name, @Nullable String permission, @NonNull Argument<?>... args) {
         this.name = name;
         this.permission = permission;
         this.args = List.of(args);
diff --git a/common/src/main/java/dev/xhyrom/lighteco/common/command/argument/Argument.java b/common/src/main/java/dev/xhyrom/lighteco/common/command/argument/Argument.java
index a04859b..744607c 100644
--- a/common/src/main/java/dev/xhyrom/lighteco/common/command/argument/Argument.java
+++ b/common/src/main/java/dev/xhyrom/lighteco/common/command/argument/Argument.java
@@ -1,19 +1,20 @@
 package dev.xhyrom.lighteco.common.command.argument;
 
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
 import lombok.Getter;
-import net.kyori.adventure.text.Component;
 
-public class Argument {
+public abstract class Argument<T> {
     @Getter
     private final String name;
-    @Getter
-    private final boolean required;
-    @Getter
-    private final Component description;
+    protected final LightEcoPlugin plugin;
 
-    public Argument(String name, boolean required, Component description) {
+    protected Argument(LightEcoPlugin plugin, String name) {
+        this.plugin = plugin;
         this.name = name;
-        this.required = required;
-        this.description = description;
     }
+
+    public abstract Class<T> getPrimitiveType();
+    public abstract ArgumentType getArgumentType();
+
+    public abstract T parse(String input);
 }
diff --git a/common/src/main/java/dev/xhyrom/lighteco/common/command/argument/ArgumentType.java b/common/src/main/java/dev/xhyrom/lighteco/common/command/argument/ArgumentType.java
new file mode 100644
index 0000000..ef73afc
--- /dev/null
+++ b/common/src/main/java/dev/xhyrom/lighteco/common/command/argument/ArgumentType.java
@@ -0,0 +1,7 @@
+package dev.xhyrom.lighteco.common.command.argument;
+
+public enum ArgumentType {
+    OFFLINE_USER,
+    INTEGER,
+    DOUBLE;
+}
diff --git a/common/src/main/java/dev/xhyrom/lighteco/common/command/argument/type/OfflineUserArgument.java b/common/src/main/java/dev/xhyrom/lighteco/common/command/argument/type/OfflineUserArgument.java
new file mode 100644
index 0000000..1894c3e
--- /dev/null
+++ b/common/src/main/java/dev/xhyrom/lighteco/common/command/argument/type/OfflineUserArgument.java
@@ -0,0 +1,34 @@
+package dev.xhyrom.lighteco.common.command.argument.type;
+
+import dev.xhyrom.lighteco.common.command.argument.Argument;
+import dev.xhyrom.lighteco.common.command.argument.ArgumentType;
+import dev.xhyrom.lighteco.common.model.user.User;
+import dev.xhyrom.lighteco.common.plugin.LightEcoPlugin;
+
+import java.util.UUID;
+
+public class OfflineUserArgument extends Argument<User> {
+    public OfflineUserArgument(LightEcoPlugin plugin, String name) {
+        super(plugin, name);
+    }
+
+    @Override
+    public Class<User> getPrimitiveType() {
+        return User.class;
+    }
+
+    @Override
+    public ArgumentType getArgumentType() {
+        return ArgumentType.OFFLINE_USER;
+    }
+
+    @Override
+    public User parse(String input) {
+        UUID uniqueId = this.plugin.getBootstrap().lookupUniqueId(input).orElse(null);
+        if (uniqueId == null) {
+            return null;
+        }
+
+        return this.plugin.getUserManager().loadUser(uniqueId).join();
+    }
+}
diff --git a/common/src/main/java/dev/xhyrom/lighteco/common/plugin/bootstrap/LightEcoBootstrap.java b/common/src/main/java/dev/xhyrom/lighteco/common/plugin/bootstrap/LightEcoBootstrap.java
index ac16413..edebb01 100644
--- a/common/src/main/java/dev/xhyrom/lighteco/common/plugin/bootstrap/LightEcoBootstrap.java
+++ b/common/src/main/java/dev/xhyrom/lighteco/common/plugin/bootstrap/LightEcoBootstrap.java
@@ -6,6 +6,7 @@ import dev.xhyrom.lighteco.common.plugin.scheduler.SchedulerAdapter;
 import java.io.InputStream;
 import java.nio.file.Path;
 import java.util.List;
+import java.util.Optional;
 import java.util.UUID;
 
 public interface LightEcoBootstrap {
@@ -13,7 +14,10 @@ public interface LightEcoBootstrap {
     PluginLogger getLogger();
     SchedulerAdapter getScheduler();
     Path getDataDirectory();
+
+    Optional<UUID> lookupUniqueId(String username);
     boolean isPlayerOnline(UUID uniqueId);
     List<UUID> getOnlinePlayers();
+
     InputStream getResourceStream(String filename);
 }