diff --git a/keyboards/keebio/quefrency/keymaps/bcat/config.h b/keyboards/keebio/quefrency/keymaps/bcat/config.h
new file mode 100644
index 00000000000..f11bd0afae6
--- /dev/null
+++ b/keyboards/keebio/quefrency/keymaps/bcat/config.h
@@ -0,0 +1,13 @@
+#pragma once
+
+#define USE_SERIAL
+
+/* Make operation smoother. */
+#define MOUSEKEY_DELAY 0
+#define MOUSEKEY_INTERVAL 16
+
+/* Lower mouse speed to adjust for reduced MOUSEKEY_INTERVAL. */
+#define MOUSEKEY_MAX_SPEED 7
+#define MOUSEKEY_TIME_TO_MAX 150
+#define MOUSEKEY_WHEEL_MAX_SPEED 4
+#define MOUSEKEY_WHEEL_TIME_TO_MAX 150
diff --git a/keyboards/keebio/quefrency/keymaps/bcat/keymap.c b/keyboards/keebio/quefrency/keymaps/bcat/keymap.c
new file mode 100644
index 00000000000..2e492f4dc15
--- /dev/null
+++ b/keyboards/keebio/quefrency/keymaps/bcat/keymap.c
@@ -0,0 +1,42 @@
+#include QMK_KEYBOARD_H
+
+enum layer {
+    LAYER_DEFAULT,
+    LAYER_FUNCTION,
+    LAYER_MOUSE,
+};
+
+/* Switch to mouse function layer when held. */
+#define L_FUNC MO(LAYER_FUNCTION)
+
+/* Switch to mouse layer when held; send menu key when tapped. */
+#define L_MOUS LT(LAYER_MOUSE, KC_APP)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* Default layer: http://www.keyboard-layout-editor.com/#/gists/60a262432bb340b37d364a4424f3037b */
+    [LAYER_DEFAULT] = LAYOUT_65(
+        KC_ESC,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSLS, KC_GRV,  KC_HOME, \
+        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSPC, KC_PGUP,          \
+        KC_LCTL, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,  KC_PGDN,                   \
+        KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT, KC_UP,   KC_END,                    \
+        KC_LCTL, KC_LGUI, KC_LALT, L_FUNC,  KC_SPC,  KC_SPC,  XXXXXXX, KC_RALT, L_FUNC,  L_MOUS,  KC_LEFT, KC_DOWN, KC_RGHT                             \
+    ),
+
+    /* Function layer: http://www.keyboard-layout-editor.com/#/gists/59636898946da51f91fb290f8e078b4d */
+    [LAYER_FUNCTION] = LAYOUT_65(
+        _______, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_PSCR, KC_SLCK, KC_PAUS, \
+        _______, KC_MPLY, KC_VOLU, KC_MSTP, _______, _______, _______, _______, _______, _______, _______, _______, KC_INS,  KC_DEL,  _______,          \
+        KC_CAPS, KC_MPRV, KC_VOLD, KC_MNXT, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,                   \
+        _______, _______, KC_MUTE, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,                   \
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______                             \
+    ),
+
+    /* Mouse layer: http://www.keyboard-layout-editor.com/#/gists/05b9fbe8a34f65ed85ded659b3941152 */
+    [LAYER_MOUSE] = LAYOUT_65(
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          \
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,                   \
+        _______, _______, _______, _______, _______, _______, _______, _______, KC_WH_U, KC_WH_D, KC_BTN3, KC_BTN1, KC_MS_U, KC_BTN2,                   \
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_MS_L, KC_MS_D, KC_MS_R                             \
+    ),
+};
diff --git a/keyboards/keebio/quefrency/keymaps/bcat/readme.md b/keyboards/keebio/quefrency/keymaps/bcat/readme.md
new file mode 100644
index 00000000000..6cb954da833
--- /dev/null
+++ b/keyboards/keebio/quefrency/keymaps/bcat/readme.md
@@ -0,0 +1,17 @@
+# bcat's Quefrency 65% layout
+
+This is pretty much a stock 65% split keyboard layout, with an HHKB-style
+(split) backspace, media keys in the function layer centered around the WASD
+cluster, and mouse keys on their own layer centered around the arrow cluster.
+
+## Default layer
+
+![Default layer layout](https://i.imgur.com/3riRFev.png)
+
+## Function layer
+
+![Function layer layout](https://i.imgur.com/fjAbJmy.png)
+
+## Mouse layer
+
+![Mouse layer layout](https://i.imgur.com/lCRDfdp.png)
diff --git a/keyboards/keebio/quefrency/keymaps/bcat/rules.mk b/keyboards/keebio/quefrency/keymaps/bcat/rules.mk
new file mode 100644
index 00000000000..6c605daecf5
--- /dev/null
+++ b/keyboards/keebio/quefrency/keymaps/bcat/rules.mk
@@ -0,0 +1 @@
+MOUSEKEY_ENABLE = yes