prehook.profile.php

<?php
if (!$modx->user->hasSessionContext($modx->context->get('key')) return '';

$userArray = $modx->user->toArray();
$profile = $modx->user->getOne('Profile');
if ($profile) {
  $userArray = array_merge($profile->toArray(),$userArray);

  $extended = $profile->get('extended');
  if (!empty($extended) && is_array($extended)) {
    $userArray = array_merge($extended,$userArray);
  }
}

$hook->setValues($userArray);
return true;