diff --git a/Makefile b/Makefile
index e3d2cbd9..6be7edf6 100644
--- a/Makefile
+++ b/Makefile
@@ -49,6 +49,7 @@ SOURCES = \
 	BossIronH \
 	BossLife \
 	BossOhm \
+	BossPress \
 	BossTwinD \
 	BossX \
 	BulHit \
diff --git a/src/Boss.cpp b/src/Boss.cpp
index eee22014..d51689b0 100644
--- a/src/Boss.cpp
+++ b/src/Boss.cpp
@@ -9,6 +9,7 @@
 #include "BossFrog.h"
 #include "BossIronH.h"
 #include "BossOhm.h"
+#include "BossPress.h"
 #include "BossTwinD.h"
 #include "BossX.h"
 #include "NpChar.h"
@@ -198,7 +199,7 @@ BOSSFUNCTION gpBossFuncTbl[10] =
 	ActBossChar_Ironhead,
 	ActBossChar_Twin,
 	ActBossChar_Undead,
-	nullptr, //ActBossChar_Press,
+	ActBossChar_Press,
 	nullptr, //ActBossChar_Ballos
 };
 
diff --git a/src/BossPress.cpp b/src/BossPress.cpp
new file mode 100644
index 00000000..ab25ff95
--- /dev/null
+++ b/src/BossPress.cpp
@@ -0,0 +1,222 @@
+#include "BossPress.h"
+
+#include "Boss.h"
+#include "Game.h"
+#include "Map.h"
+#include "Sound.h"
+#include "WindowsWrapper.h"
+
+void ActBossChar_Press(void)
+{
+	switch (gBoss[0].act_no)
+	{
+		case 0:
+			gBoss[0].act_no = 10;
+			gBoss[0].cond = 0x80;
+			gBoss[0].exp = 1;
+			gBoss[0].direct = 2;
+			gBoss[0].x = 0;
+			gBoss[0].y = 0;
+			gBoss[0].view.front = 0x5000;
+			gBoss[0].view.top = 0x7800;
+			gBoss[0].view.back = 0x5000;
+			gBoss[0].view.bottom = 0x7800;
+			gBoss[0].hit_voice = 54;
+			gBoss[0].hit.front = 0x6200;
+			gBoss[0].hit.top = 0x7800;
+			gBoss[0].hit.back = 0x5000;
+			gBoss[0].hit.bottom = 0x6000;
+			gBoss[0].bits = 0x8248;
+			gBoss[0].size = 3;
+			gBoss[0].damage = 10;
+			gBoss[0].code_event = 1000;
+			gBoss[0].life = 700;
+			break;
+
+		case 5:
+			gBoss[0].act_no = 6;
+			gBoss[0].x = 0;
+			gBoss[0].y = 0;
+			gBoss[1].cond = 0;
+			gBoss[2].cond = 0;
+			break;
+
+		case 10:
+			gBoss[0].act_no = 11;
+			gBoss[0].x = 0x14000;
+			gBoss[0].y = 0x9400;
+			break;
+
+		case 20:
+			gBoss[0].damage = 0;
+			gBoss[0].act_no = 21;
+			gBoss[0].x = 0x14000;
+			gBoss[0].y = 0x33A00;
+			gBoss[0].bits &= ~0x40;
+			gBoss[1].cond = 0;
+			gBoss[2].cond = 0;
+			// Fallthrough
+		case 21:
+			if ((++gBoss[0].act_wait & 0xF) == 0)
+				SetDestroyNpChar(gBoss[0].x + (Random(-40, 40) * 0x200), gBoss[0].y + (Random(-60, 60) * 0x200), 1, 1);
+
+			break;
+
+		case 30:
+			gBoss[0].act_no = 31;
+			gBoss[0].ani_no = 2;
+			gBoss[0].x = 81920;
+			gBoss[0].y = 0x8000;
+			// Fallthrough
+		case 31:
+			gBoss[0].y += 0x800;
+
+			if (gBoss[0].y >= 0x33A00)
+			{
+				gBoss[0].y = 0x33A00;
+				gBoss[0].ani_no = 0;
+				gBoss[0].act_no = 20;
+				PlaySoundObject(44, 1);
+
+				for (int i = 0; i < 5; ++i)
+					SetNpChar(4, gBoss[0].x + (Random(-40, 40) * 0x200), gBoss[0].y + 0x7800, 0, 0, 0, 0, 0x100);
+
+			}
+
+			break;
+
+		case 100:
+			gBoss[0].act_no = 101;
+			gBoss[0].count2 = 9;
+			gBoss[0].act_wait = -100;
+
+			gBoss[1].cond = 0x80;
+			gBoss[1].hit.front = 0x1C00;
+			gBoss[1].hit.back = 0x1C00;
+			gBoss[1].hit.top = 0x1000;
+			gBoss[1].hit.bottom = 0x1000;
+			gBoss[1].bits = 12;
+
+			gBoss[2] = gBoss[1];
+
+			gBoss[3].cond = 0x90;
+			gBoss[3].bits |= 0x20;
+			gBoss[3].hit.front = 0xC00;
+			gBoss[3].hit.back = 0xC00;
+			gBoss[3].hit.top = 0x1000;
+			gBoss[3].hit.bottom = 0x1000;
+
+			SetNpChar(325, gBoss[0].x, gBoss[0].y + 0x7800, 0, 0, 0, 0, 0x100);
+			// Fallthrough
+		case 101:
+			if (gBoss[0].count2 > 1 && gBoss[0].life < 70 * gBoss[0].count2)
+			{
+				--gBoss[0].count2;
+
+				for (int i = 0; i < 5; ++i)
+				{
+					ChangeMapParts(i + 8, gBoss[0].count2, 0);
+					SetDestroyNpChar((i + 8) * 0x2000, gBoss[0].count2 * 0x2000, 0, 4);
+					PlaySoundObject(12, 1);
+				}
+			}
+
+			if (++gBoss[0].act_wait == 81 || gBoss[0].act_wait == 241)
+				SetNpChar(323, 0x6000, 0x1E000, 0, 0, 1, 0, 0x100);
+
+			if (gBoss[0].act_wait == 1 || gBoss[0].act_wait == 161)
+				SetNpChar(323, 0x22000, 0x1E000, 0, 0, 1, 0, 0x100);
+
+			if (gBoss[0].act_wait >= 300)
+			{
+				gBoss[0].act_wait = 0;
+				SetNpChar(325, gBoss[0].x, gBoss[0].y + 0x7800, 0, 0, 0, 0, 0x100);
+			}
+
+			break;
+
+		case 500:
+			gBoss[3].bits &= ~0x20;
+
+			gBoss[0].act_no = 501;
+			gBoss[0].act_wait = 0;
+			gBoss[0].count1 = 0;
+
+			DeleteNpCharCode(325, 1);
+			DeleteNpCharCode(330, 1);
+			// Fallthrough
+		case 501:
+			if ((++gBoss[0].act_wait & 0xF) == 0)
+			{
+				PlaySoundObject(12, 1);
+				SetDestroyNpChar(gBoss[0].x + (Random(-40, 40) * 0x200), gBoss[0].y + (Random(-60, 60) * 0x200), 1, 1);
+			}
+
+			if (gBoss[0].act_wait == 95)
+				gBoss[0].ani_no = 1;
+			if (gBoss[0].act_wait == 98)
+				gBoss[0].ani_no = 2;
+
+			if (gBoss[0].act_wait > 100)
+				gBoss[0].act_no = 510;
+			break;
+
+		case 510:
+			gBoss[0].ym += 0x40;
+			gBoss[0].damage = 0x7F;
+			gBoss[0].y += gBoss[0].ym;
+
+			if (gBoss[0].count1 == 0 && gBoss[0].y > 0x14000)
+			{
+				gBoss[0].count1 = 1;
+				gBoss[0].ym = -0x200;
+				gBoss[0].damage = 0;
+
+				for (int i = 0; i < 7; ++i)
+				{
+					ChangeMapParts(i + 7, 14, 0);
+					SetDestroyNpChar((i + 7) * 0x2000, 0x1C000, 0, 0);
+					PlaySoundObject(12, 1);
+				}
+			}
+
+			if (gBoss[0].y > 0x3C000)
+				gBoss[0].act_no = 520;
+
+			break;
+	}
+
+	gBoss[1].x = gBoss[0].x - 0x3000;
+	gBoss[1].y = gBoss[0].y + 0x6800;
+
+	gBoss[2].x = gBoss[0].x + 0x3000;
+	gBoss[2].y = gBoss[0].y + 0x6800;
+
+	gBoss[3].x = gBoss[0].x;
+	gBoss[3].y = gBoss[0].y + 0x5000;
+
+	RECT rc[3];
+	RECT rcDamage[3];
+
+	rc[0] = {0, 0, 80, 120};
+	rc[1] = {80, 0, 160, 120};
+	rc[2] = {160, 0, 240, 120};
+
+	rcDamage[0] = {0, 120, 80, 240};
+	rcDamage[1] = {80, 120, 160, 240};
+	rcDamage[2] = {160, 120, 240, 240};
+
+	if (gBoss[0].shock)
+	{
+		static unsigned char flash;
+
+		if ((++flash >> 1) & 1)
+			gBoss[0].rect = rc[gBoss[0].ani_no];
+		else
+			gBoss[0].rect = rcDamage[gBoss[0].ani_no];
+	}
+	else
+	{
+		gBoss[0].rect = rc[gBoss[0].ani_no];
+	}
+}
\ No newline at end of file
diff --git a/src/BossPress.h b/src/BossPress.h
new file mode 100644
index 00000000..9d651720
--- /dev/null
+++ b/src/BossPress.h
@@ -0,0 +1,3 @@
+#pragma once
+
+void ActBossChar_Press(void);