diff --git a/server/fixtures/mama-kitty-spawner.entity.js b/server/fixtures/mama-kitty-spawner.entity.js
index 8797c3c..ce4f7e2 100644
--- a/server/fixtures/mama-kitty-spawner.entity.js
+++ b/server/fixtures/mama-kitty-spawner.entity.js
@@ -14,32 +14,36 @@ export function mamaKittySpawnerJSON() {
     },
   );
 
-  function setAxeFromRoom(roomAxe, entityAxe) {
-    return buildTraversal(
-      ['context', 'json', 'traits', 'positioned', 'state', entityAxe],
-      buildInvoke(['global', 'multiply'], [
+  function roomAxeValue(roomAxe) {
+    return buildInvoke(
+      ['global', 'randomNumber'],
+      [
+        100,
         buildInvoke(
-          ['global', 'randomNumber'],
+          ['global', 'sub'],
           [
+            buildTraversal(['entity', 'room', roomAxe]),
             100,
-            buildInvoke(
-              ['global', 'sub'],
-              [
-                buildTraversal(['entity', 'room', roomAxe]),
-                100,
-              ],
-            )
           ],
-        ),
-        4,
-      ]),
+        )
+      ],
     );
   }
 
-  const spawn = buildInvoke(['entity', 'spawn'], [
-    'mama',
-    buildTraversal(['context', 'json']),
-  ]);
+  const spawn = buildInvoke(
+    ['entity', 'spawnAt'],
+    [
+      'mama',
+      buildInvoke(
+        ['global', 'makeArray'],
+        [
+          roomAxeValue('width'),
+          roomAxeValue('height'),
+        ],
+      ),
+      buildTraversal(['context', 'json']),
+    ],
+  );
 
   return {
     traits: {
@@ -53,9 +57,6 @@ export function mamaKittySpawnerJSON() {
                 routine: {
                   type: 'actions',
                   traversals: [
-                    storeJSON,
-                    setAxeFromRoom('width', 'x'),
-                    setAxeFromRoom('height', 'y'),
                     spawn,
                   ],
                 }
diff --git a/server/fixtures/mama-kitty.entity.js b/server/fixtures/mama-kitty.entity.js
index 5e94cc5..8b5fd38 100644
--- a/server/fixtures/mama-kitty.entity.js
+++ b/server/fixtures/mama-kitty.entity.js
@@ -5,36 +5,21 @@ import {kittyJSON} from './kitty.entity';
 // A MAMA kitteh.
 export function mamaKittyJSON() {
 
-  const storeJSON = buildTraversal(
-    ['context', 'json'],
-    {
-      traits: {
-        positioned: {
-          state: {},
-        },
-      },
-    },
+  const spawn = buildInvoke(
+    ['entity', 'spawnAt'],
+    [
+      'kitteh',
+      buildInvoke(
+        ['global', 'makeArray'],
+        [
+          buildTraversal(['entity', 'x']),
+          buildTraversal(['entity', 'y']),
+        ],
+      ),
+      buildTraversal(['context', 'json']),
+    ],
   );
 
-  const setJSONX = buildTraversal(
-    ['context', 'json', 'traits', 'positioned', 'state', 'x'],
-    buildInvoke(['global', 'multiply'], [
-      buildTraversal(['entity', 'x']), 4
-    ]),
-  );
-
-  const setJSONY = buildTraversal(
-    ['context', 'json', 'traits', 'positioned', 'state', 'y'],
-    buildInvoke(['global', 'multiply'], [
-      buildTraversal(['entity', 'y']), 4
-    ]),
-  );
-
-  const spawn = buildInvoke(['entity', 'spawn'], [
-    'kitteh',
-    buildTraversal(['context', 'json']),
-  ]);
-
   const playDeathSound = buildInvoke(['entity', 'playSound'], [
     buildTraversal(['entity', 'deathSound']),
   ]);
@@ -66,9 +51,6 @@ export function mamaKittyJSON() {
   };
   traits.animated.params.animations.idle.offset = [0, -8];
   traits.behaved.params.routines.routines.initial.routine.traversals.push(...[
-    storeJSON,
-    setJSONX,
-    setJSONY,
     spawn,
   ]);
   traits.existent.state.name = 'Mama Kitty';