diff --git a/src/main/java/us/myles/ViaVersion/api/Boss/BossBar.java b/src/main/java/us/myles/ViaVersion/api/Boss/BossBar.java
new file mode 100644
index 000000000..da9010cd6
--- /dev/null
+++ b/src/main/java/us/myles/ViaVersion/api/Boss/BossBar.java
@@ -0,0 +1,122 @@
+package us.myles.ViaVersion.api.boss;
+
+import org.bukkit.entity.Player;
+
+import java.util.Set;
+import java.util.UUID;
+
+public interface BossBar {
+    /**
+     * Change the title
+     *
+     * @param title Title can be in either JSON or just text
+     */
+    void setTitle(String title);
+
+    /**
+     * Get the current title
+     *
+     * @return the title
+     */
+    String getTitle();
+
+    /**
+     * Change the health
+     *
+     * @param health this float has to be between 0F - 1F
+     */
+    void setHealth(float health);
+
+    /**
+     * Get the health
+     *
+     * @return float between 0F - 1F
+     */
+    float getHealth();
+
+    /**
+     * Yay colors!
+     *
+     * @param color Whatever color you want!
+     */
+    void setColor(BossColor color);
+
+    /**
+     * Get the bossbar color
+     *
+     * @return
+     */
+    BossColor getColor();
+
+    /**
+     * Change the bosbar style
+     *
+     * @param style BossStyle
+     */
+    void setStyle(BossStyle style);
+
+    /**
+     * Get the bosbar style
+     *
+     * @return BossStyle
+     */
+    BossStyle getStyle();
+
+    /**
+     * Show the bossbar to a player.
+     *
+     * @param player
+     */
+    void addPlayer(Player player);
+
+    /**
+     * Remove the bossbar from a player
+     *
+     * @param player
+     */
+    void removePlayer(Player player);
+
+    /**
+     * Add flags
+     *
+     * @param flag
+     */
+    void addFlag(BossFlag flag);
+
+    /**
+     * Remove flags.
+     *
+     * @param flag
+     */
+    void removeFlag(BossFlag flag);
+
+    /**
+     * @param flag
+     * @return
+     */
+    boolean hasFlag(BossFlag flag);
+
+    /**
+     * Get players
+     *
+     * @return UUIDS from players (sorry I lied)
+     */
+    Set<UUID> getPlayers();
+
+    /**
+     * Show the bossbar to everyone (In the getPlayer set)
+     */
+    void show();
+
+    /**
+     * Hide the bossbar from everyone (In the getPlayer set)
+     */
+    void hide();
+
+    /**
+     * Is it visible?
+     *
+     * @return visibility changable with show() and hide()
+     */
+    boolean isVisible();
+}