diff --git a/src/device/input/parse/v01/server.go b/src/device/input/parse/v01/server.go
index 30b0312..4c110c2 100644
--- a/src/device/input/parse/v01/server.go
+++ b/src/device/input/parse/v01/server.go
@@ -159,7 +159,31 @@ func (v01 *V01) serveGM(w http.ResponseWriter, r *http.Request) {
 		}
 		v01.servePutBroadcastValue(fmt.Sprintf("<<SOMEONE SAID %q>>", strings.ToUpper(r.URL.Query().Get("message"))))
 	case "/gm/rpc/fillNonPlayerAliases":
-		panic("TODO stash aliases")
+		b, _ := io.ReadAll(r.Body)
+		var pool []string
+		yaml.Unmarshal(b, &pool)
+		n := 0
+		for _, v := range v01.cfg.Users {
+			if v.Player == 0 {
+				n += 1
+			}
+		}
+		if len(b) < n {
+			http.Error(w, fmt.Sprintf("request body must contain a list of %v options", n), http.StatusBadRequest)
+			return
+		}
+		for i := 0; i < 100; i++ {
+			a, b := rand.Int()%len(pool), rand.Int()%len(pool)
+			pool[a], pool[b] = pool[b], pool[a]
+		}
+		i := 0
+		for k, v := range v01.cfg.Users {
+			if v.Player == 0 {
+				v.Alias = pool[i]
+				v01.cfg.Users[k] = v
+				i += 1
+			}
+		}
 	case "/gm/rpc/vote":
 		panic("TODO stash user:votedForUser")
 	case "/gm/rpc/elect":
diff --git a/src/device/input/parse/v01/server_test.go b/src/device/input/parse/v01/server_test.go
index b564749..5e0776f 100644
--- a/src/device/input/parse/v01/server_test.go
+++ b/src/device/input/parse/v01/server_test.go
@@ -194,7 +194,24 @@ func TestServeGM(t *testing.T) {
 	})
 
 	t.Run("fillNonPlayerAliases", func(t *testing.T) {
-		t.Error("not impl")
+		t.Run("happy", func(t *testing.T) {
+			v01 := NewV01(ctx, nil)
+			v01.cfg.Users = map[string]configUser{
+				"bel":  configUser{Player: 1},
+				"zach": configUser{Player: 0},
+			}
+			do(v01, "/gm/rpc/fillNonPlayerAliases", "[qt]")
+			if v := v01.cfg.Users["bel"]; v.Alias != "" {
+				t.Error(v.Alias)
+			} else if v.Player != 1 {
+				t.Error(v.Player)
+			}
+			if v := v01.cfg.Users["zach"]; v.Alias != "qt" {
+				t.Error(v.Alias)
+			} else if v.Player != 0 {
+				t.Error(v.Player)
+			}
+		})
 	})
 
 	t.Run("vote", func(t *testing.T) {