Hello @LoneTreeLeaf !

This part is formed in the BxBaseCmts::getComment method byu the following code:

$aAuthorAcl = BxDolAcl::getInstance()->getMemberMembershipInfo($aCmt['cmt_author_id']);
   if(!empty($aAuthorAcl) && isset($this->_aAclId2Name[$aAuthorAcl['id']]))
     $sClass .= ' ' . $this->_sStylePrefix . '-aml-' . $this->_aAclId2Name[$aAuthorAcl['id']];

So you may redeclare this method in the BxTemplCmts class of your template and include your own addons to this set.