This can't be a default feature, but I can give you the directions so that you can use it for your own forum.
SPortal2.php
Find:
m.posts, m.avatar, a.id_attach, a.attachment_type, a.filename
Replace:
m.posts, m.avatar, a.id_attach, a.attachment_type, a.filename, m.gender
Find:
//Collect the ids
Replace:
if (!empty($modSettings['generic_avatars_member_enable']) && $row['avatar'] == '' && $row['id_attach'] < 1)
{
if (!empty($modSettings['generic_avatars_gender_enable']) && ($row['gender'] == 2) && !empty($modSettings['generic_avatars_female_image_url']))
$generic_avatar_image = $modSettings['generic_avatars_female_image_url'];
else if (!empty($modSettings['generic_avatars_gender_enable']) && ($row['gender'] == 1) && !empty($modSettings['generic_avatars_male_image_url']))
$generic_avatar_image = $modSettings['generic_avatars_male_image_url'];
else if (!empty($modSettings['generic_avatars_neutral_image_url']))
$generic_avatar_image = $modSettings['generic_avatars_neutral_image_url'];
if (!empty($generic_avatar_image))
$row['avatar'] = $generic_avatar_image;
}
//Collect the ids
Find:
//The Membercolor Link has all ready add this?
Replace:
global $txt;
if (!empty($modSettings['generic_avatars_member_enable']) && empty($memberContext[$latest_member_id]['avatar']['href']))
{
if (!empty($modSettings['generic_avatars_gender_enable']) && ($memberContext[$latest_member_id]['gender']['name'] == $txt['female']) && !empty($modSettings['generic_avatars_female_image_url']))
$generic_avatar_image = $modSettings['generic_avatars_female_image_url'];
else if (!empty($modSettings['generic_avatars_gender_enable']) && ($memberContext[$latest_member_id]['gender']['name'] == $txt['male']) && !empty($modSettings['generic_avatars_male_image_url']))
$generic_avatar_image = $modSettings['generic_avatars_male_image_url'];
else if (!empty($modSettings['generic_avatars_neutral_image_url']))
$generic_avatar_image = $modSettings['generic_avatars_neutral_image_url'];
if (!empty($generic_avatar_image))
$memberContext[$latest_member_id]['avatar']['href'] = $generic_avatar_image;
}
//The Membercolor Link has all ready add this?