diff --git a/public/scripts/extensions/expressions/index.js b/public/scripts/extensions/expressions/index.js
index 71be1e422..dc8ce8ba6 100644
--- a/public/scripts/extensions/expressions/index.js
+++ b/public/scripts/extensions/expressions/index.js
@@ -12,6 +12,7 @@ import { ARGUMENT_TYPE, SlashCommandArgument, SlashCommandNamedArgument } from '
 import { isFunctionCallingSupported } from '../../openai.js';
 import { SlashCommandEnumValue, enumTypes } from '../../slash-commands/SlashCommandEnumValue.js';
 import { commonEnumProviders } from '../../slash-commands/SlashCommandCommonEnumsProvider.js';
+import { findChar } from '../../slash-commands.js';
 export { MODULE_NAME };
 
 const MODULE_NAME = 'expressions';
@@ -2105,14 +2106,20 @@ function migrateSettings() {
     }));
     SlashCommandParser.addCommandObject(SlashCommand.fromProps({
         name: 'lastsprite',
-        callback: (_, value) => lastExpression[String(value).trim()] ?? '',
+        callback: (_, name) => {
+            if (typeof name !== 'string') throw new Error('name must be a string');
+            const char = findChar({ name: name });
+            const sprite = lastExpression[char?.name ?? name] ?? '';
+            return sprite;
+        },
         returns: 'the last set sprite / expression for the named character.',
         unnamedArgumentList: [
             SlashCommandArgument.fromProps({
-                description: 'character name',
+                description: 'Character name - or unique character identifier (avatar key)',
                 typeList: [ARGUMENT_TYPE.STRING],
                 isRequired: true,
                 enumProvider: commonEnumProviders.characters('character'),
+                forceEnum: true,
             }),
         ],
         helpString: 'Returns the last set sprite / expression for the named character.',
diff --git a/public/scripts/extensions/gallery/index.js b/public/scripts/extensions/gallery/index.js
index da617c683..a39634603 100644
--- a/public/scripts/extensions/gallery/index.js
+++ b/public/scripts/extensions/gallery/index.js
@@ -441,6 +441,7 @@ SlashCommandParser.addCommandObject(SlashCommand.fromProps({
             description: 'character name',
             typeList: [ARGUMENT_TYPE.STRING],
             enumProvider: commonEnumProviders.characters('character'),
+            forceEnum: true,
         }),
         SlashCommandNamedArgument.fromProps({
             name: 'group',
diff --git a/public/scripts/slash-commands.js b/public/scripts/slash-commands.js
index 95e8586ec..4be6bca7b 100644
--- a/public/scripts/slash-commands.js
+++ b/public/scripts/slash-commands.js
@@ -210,7 +210,7 @@ export function initDefaultSlashCommands() {
         ],
         unnamedArgumentList: [
             SlashCommandArgument.fromProps({
-                description: 'Character name',
+                description: 'Character name - or unique character identifier (avatar key)',
                 typeList: [ARGUMENT_TYPE.STRING],
                 enumProvider: commonEnumProviders.characters('character'),
                 forceEnum: false,
@@ -700,7 +700,7 @@ export function initDefaultSlashCommands() {
         aliases: ['addmember', 'memberadd'],
         unnamedArgumentList: [
             SlashCommandArgument.fromProps({
-                description: 'character name',
+                description: 'Character name - or unique character identifier (avatar key)',
                 typeList: [ARGUMENT_TYPE.STRING],
                 isRequired: true,
                 enumProvider: () => selected_group ? commonEnumProviders.characters('character')() : [],
@@ -2810,26 +2810,23 @@ async function removeGroupMemberCallback(_, arg) {
     return '';
 }
 
-async function addGroupMemberCallback(_, arg) {
+async function addGroupMemberCallback(_, name) {
     if (!selected_group) {
         toastr.warning('Cannot run /memberadd command outside of a group chat.');
         return '';
     }
 
-    if (!arg) {
+    if (!name) {
         console.warn('WARN: No argument provided for /memberadd command');
         return '';
     }
 
-    arg = arg.trim();
-    const chid = findCharacterIndex(arg);
-
-    if (chid === -1) {
-        console.warn(`WARN: No character found for argument ${arg}`);
+    const character = findChar({ name: name, preferCurrentChar: false });
+    if (!character) {
+        console.warn(`WARN: No character found for argument ${name}`);
         return '';
     }
 
-    const character = characters[chid];
     const group = groups.find(x => x.id === selected_group);
 
     if (!group || !Array.isArray(group.members)) {
diff --git a/public/scripts/tags.js b/public/scripts/tags.js
index c56e0d1cb..447e01ded 100644
--- a/public/scripts/tags.js
+++ b/public/scripts/tags.js
@@ -26,6 +26,7 @@ import { debounce_timeout } from './constants.js';
 import { INTERACTABLE_CONTROL_CLASS } from './keyboard.js';
 import { commonEnumProviders } from './slash-commands/SlashCommandCommonEnumsProvider.js';
 import { renderTemplateAsync } from './templates.js';
+import { findChar } from './slash-commands.js';
 
 export {
     TAG_FOLDER_TYPES,
@@ -507,7 +508,7 @@ export function getTagKeyForEntityElement(element) {
  */
 export function searchCharByName(charName, { suppressLogging = false } = {}) {
     const entity = charName
-        ? (characters.find(x => x.name === charName) || groups.find(x => x.name == charName))
+        ? (findChar({ name: charName }) || groups.find(x => equalsIgnoreCaseAndAccents(x.name, charName)))
         : (selected_group ? groups.find(x => x.id == selected_group) : characters[this_chid]);
     const key = getTagKeyForEntity(entity);
     if (!key) {
@@ -1861,8 +1862,9 @@ function registerTagsSlashCommands() {
             return String(result);
         },
         namedArgumentList: [
-            SlashCommandNamedArgument.fromProps({ name: 'name',
-                description: 'Character name',
+            SlashCommandNamedArgument.fromProps({
+                name: 'name',
+                description: 'Character name - or unique character identifier (avatar key)',
                 typeList: [ARGUMENT_TYPE.STRING],
                 defaultValue: '{{char}}',
                 enumProvider: commonEnumProviders.characters(),
@@ -1907,7 +1909,7 @@ function registerTagsSlashCommands() {
         },
         namedArgumentList: [
             SlashCommandNamedArgument.fromProps({ name: 'name',
-                description: 'Character name',
+                description: 'Character name - or unique character identifier (avatar key)',
                 typeList: [ARGUMENT_TYPE.STRING],
                 defaultValue: '{{char}}',
                 enumProvider: commonEnumProviders.characters(),
@@ -1950,7 +1952,7 @@ function registerTagsSlashCommands() {
         namedArgumentList: [
             SlashCommandNamedArgument.fromProps({
                 name: 'name',
-                description: 'Character name',
+                description: 'Character name - or unique character identifier (avatar key)',
                 typeList: [ARGUMENT_TYPE.STRING],
                 defaultValue: '{{char}}',
                 enumProvider: commonEnumProviders.characters(),
@@ -1993,7 +1995,7 @@ function registerTagsSlashCommands() {
         namedArgumentList: [
             SlashCommandNamedArgument.fromProps({
                 name: 'name',
-                description: 'Character name',
+                description: 'Character name - or unique character identifier (avatar key)',
                 typeList: [ARGUMENT_TYPE.STRING],
                 defaultValue: '{{char}}',
                 enumProvider: commonEnumProviders.characters(),