diff --git a/src/main/kotlin/com/qrakn/honcho/Honcho.kt b/src/main/kotlin/com/qrakn/honcho/Honcho.kt
index 8155aad..e55f620 100644
--- a/src/main/kotlin/com/qrakn/honcho/Honcho.kt
+++ b/src/main/kotlin/com/qrakn/honcho/Honcho.kt
@@ -1,18 +1,27 @@
 package com.qrakn.honcho
 
 import com.qrakn.honcho.command.adapter.CommandTypeAdapter
-import com.qrakn.honcho.command.adapter.impl.PlayerTypeAdapter
-import com.qrakn.honcho.command.adapter.impl.StringTypeAdapter
+import com.qrakn.honcho.command.adapter.impl.*
+import org.bukkit.ChatColor
+import org.bukkit.GameMode
+import org.bukkit.OfflinePlayer
+import org.bukkit.World
 import org.bukkit.entity.Player
 import org.bukkit.plugin.java.JavaPlugin
 
 class Honcho(val plugin: JavaPlugin) {
 
     private val executor: HonchoExecutor = HonchoExecutor(this)
+    var permissionMessage: String = "&cYou don't have permission to use this command"
 
     init {
+        registerTypeAdapter(Boolean::class.java, BooleanTypeAdapter())
+        registerTypeAdapter(GameMode::class.java, GameModeTypeAdapter())
+        registerTypeAdapter(Integer::class.java, IntegerTypeAdapter())
+        registerTypeAdapter(OfflinePlayer::class.java, OfflinePlayerTypeAdapter())
         registerTypeAdapter(String::class.java, StringTypeAdapter())
         registerTypeAdapter(Player::class.java, PlayerTypeAdapter())
+        registerTypeAdapter(World::class.java, WorldTypeAdapter())
     }
 
     fun registerCommand(command: Any) {
diff --git a/src/main/kotlin/com/qrakn/honcho/HonchoCommand.kt b/src/main/kotlin/com/qrakn/honcho/HonchoCommand.kt
index 84faea9..4f2928a 100644
--- a/src/main/kotlin/com/qrakn/honcho/HonchoCommand.kt
+++ b/src/main/kotlin/com/qrakn/honcho/HonchoCommand.kt
@@ -2,8 +2,6 @@ package com.qrakn.honcho
 
 import com.qrakn.honcho.command.CommandMeta
 import org.apache.commons.lang.StringUtils
-import org.apache.commons.lang.mutable.Mutable
-import org.bukkit.Bukkit
 import org.bukkit.command.CommandSender
 import org.bukkit.command.defaults.BukkitCommand
 import java.util.*
diff --git a/src/main/kotlin/com/qrakn/honcho/HonchoExecutor.kt b/src/main/kotlin/com/qrakn/honcho/HonchoExecutor.kt
index 018f42f..a45d0e3 100644
--- a/src/main/kotlin/com/qrakn/honcho/HonchoExecutor.kt
+++ b/src/main/kotlin/com/qrakn/honcho/HonchoExecutor.kt
@@ -13,9 +13,11 @@ import org.bukkit.command.CommandSender
 import org.bukkit.entity.Player
 import org.bukkit.plugin.PluginManager
 import org.bukkit.plugin.SimplePluginManager
-import java.lang.NullPointerException
+import org.bukkit.scheduler.BukkitRunnable
 import java.lang.reflect.Method
 import java.util.HashMap
+import kotlin.collections.ArrayList
+import kotlin.collections.set
 
 internal class HonchoExecutor(private val honcho: Honcho) : CommandExecutor {
 
@@ -59,8 +61,8 @@ internal class HonchoExecutor(private val honcho: Honcho) : CommandExecutor {
         val meta = binding.command.javaClass.getAnnotation(CommandMeta::class.java)
         val instance = binding.command
 
-        if (meta.permission.isNotEmpty() && !sender.hasPermission(meta.permission)) {
-            sender.sendMessage("Nope.") // TODO send configurable no permission message (make command specific or impl specific?)
+        if (!sender.hasPermission(meta.permission)) {
+            sender.sendMessage(ChatColor.translateAlternateColorCodes('&', honcho.permissionMessage))
             return true
         }
 
@@ -112,7 +114,17 @@ internal class HonchoExecutor(private val honcho: Honcho) : CommandExecutor {
             }
 
             if (arguments.size == parameters.size) {
-                method.invoke(instance, *arguments.toTypedArray())
+                if (meta.async) {
+                    object : BukkitRunnable() {
+
+                        override fun run() {
+                            method.invoke(instance, *arguments.toTypedArray())
+                        }
+
+                    }.runTaskAsynchronously(honcho.plugin)
+                } else {
+                    method.invoke(instance, *arguments.toTypedArray())
+                }
             }
 
             return true
diff --git a/src/main/kotlin/com/qrakn/honcho/command/CommandMeta.kt b/src/main/kotlin/com/qrakn/honcho/command/CommandMeta.kt
index cfad3c3..e155027 100644
--- a/src/main/kotlin/com/qrakn/honcho/command/CommandMeta.kt
+++ b/src/main/kotlin/com/qrakn/honcho/command/CommandMeta.kt
@@ -6,6 +6,8 @@ package com.qrakn.honcho.command
  * @param label the command's label(s)
  * @param permission the command's permission node
  * @param description the command's description
+ * @param subcommands the command's subcommands
+ * @param async executes the command asynchronously
  */
 @Target(AnnotationTarget.CLASS)
 @Retention(AnnotationRetention.RUNTIME)
@@ -13,4 +15,5 @@ annotation class CommandMeta(
         vararg val label: String,
         val permission: String = "",
         val description: String = "",
-        val subcommands: Boolean = false)
\ No newline at end of file
+        val subcommands: Boolean = false,
+        val async: Boolean = false)
\ No newline at end of file
diff --git a/src/main/kotlin/com/qrakn/honcho/command/adapter/CommandTypeAdapter.kt b/src/main/kotlin/com/qrakn/honcho/command/adapter/CommandTypeAdapter.kt
index 9e6e4fc..7386821 100644
--- a/src/main/kotlin/com/qrakn/honcho/command/adapter/CommandTypeAdapter.kt
+++ b/src/main/kotlin/com/qrakn/honcho/command/adapter/CommandTypeAdapter.kt
@@ -1,5 +1,7 @@
 package com.qrakn.honcho.command.adapter
 
 interface CommandTypeAdapter {
+
     fun <T> convert(string: String, type: Class<T>): T
+
 }
\ No newline at end of file
diff --git a/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/BooleanTypeAdapter.kt b/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/BooleanTypeAdapter.kt
new file mode 100644
index 0000000..f4294c4
--- /dev/null
+++ b/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/BooleanTypeAdapter.kt
@@ -0,0 +1,24 @@
+package com.qrakn.honcho.command.adapter.impl
+
+import com.qrakn.honcho.command.adapter.CommandTypeAdapter
+import java.util.*
+
+class BooleanTypeAdapter : CommandTypeAdapter {
+    override fun <T> convert(string: String, type: Class<T>): T {
+        return type.cast(MAP[string.toLowerCase()])
+    }
+
+    companion object {
+        private val MAP = HashMap<String, Boolean>()
+
+        init {
+            MAP["true"] = true
+            MAP["on"] = true
+            MAP["yes"] = true
+
+            MAP["false"] = false
+            MAP["off"] = false
+            MAP["no"] = false
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/GameModeTypeAdapter.kt b/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/GameModeTypeAdapter.kt
new file mode 100644
index 0000000..ca34c68
--- /dev/null
+++ b/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/GameModeTypeAdapter.kt
@@ -0,0 +1,29 @@
+package com.qrakn.honcho.command.adapter.impl
+
+import com.qrakn.honcho.command.adapter.CommandTypeAdapter
+import org.bukkit.GameMode
+import java.util.*
+
+class GameModeTypeAdapter : CommandTypeAdapter {
+    override fun <T> convert(string: String, type: Class<T>): T {
+        return type.cast(MAP[string.toLowerCase()])
+    }
+
+    companion object {
+        private val MAP = HashMap<String, GameMode>()
+        
+        init {
+            MAP["c"] = GameMode.CREATIVE
+            MAP["creative"] = GameMode.CREATIVE
+            MAP["1"] = GameMode.CREATIVE
+
+            MAP["s"] = GameMode.SURVIVAL
+            MAP["survival"] = GameMode.SURVIVAL
+            MAP["0"] = GameMode.SURVIVAL
+
+            MAP["a"] = GameMode.ADVENTURE
+            MAP["adventure"] = GameMode.ADVENTURE
+            MAP["2"] = GameMode.ADVENTURE
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/IntegerTypeAdapter.kt b/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/IntegerTypeAdapter.kt
new file mode 100644
index 0000000..0e85a40
--- /dev/null
+++ b/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/IntegerTypeAdapter.kt
@@ -0,0 +1,9 @@
+package com.qrakn.honcho.command.adapter.impl
+
+import com.qrakn.honcho.command.adapter.CommandTypeAdapter
+
+class IntegerTypeAdapter : CommandTypeAdapter {
+    override fun <T> convert(string: String, type: Class<T>): T {
+        return type.cast(Integer.parseInt(string))
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/OfflinePlayerTypeAdapter.kt b/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/OfflinePlayerTypeAdapter.kt
new file mode 100644
index 0000000..20687ad
--- /dev/null
+++ b/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/OfflinePlayerTypeAdapter.kt
@@ -0,0 +1,10 @@
+package com.qrakn.honcho.command.adapter.impl
+
+import com.qrakn.honcho.command.adapter.CommandTypeAdapter
+import org.bukkit.Bukkit
+
+class OfflinePlayerTypeAdapter : CommandTypeAdapter {
+    override fun <T> convert(string: String, type: Class<T>): T {
+        return type.cast(Bukkit.getOfflinePlayer(string))
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/WorldTypeAdapter.kt b/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/WorldTypeAdapter.kt
new file mode 100644
index 0000000..37bff3a
--- /dev/null
+++ b/src/main/kotlin/com/qrakn/honcho/command/adapter/impl/WorldTypeAdapter.kt
@@ -0,0 +1,10 @@
+package com.qrakn.honcho.command.adapter.impl
+
+import com.qrakn.honcho.command.adapter.CommandTypeAdapter
+import org.bukkit.Bukkit
+
+class WorldTypeAdapter : CommandTypeAdapter {
+    override fun <T> convert(string: String, type: Class<T>): T {
+        return type.cast(Bukkit.getWorld(string))
+    }
+}
\ No newline at end of file