"Sultan Orkhan" (His father was Osman) was the second leader of the Ottomans and belonged to this heretical group
To enter into the group a person must "Call and beg to the Ahlul Bayt" and then "seek refugee" in "Al Hajji Baktash".
[Bektaşi İkrar Ayini 23]
[تقديس الأشخاص في الفكر الصوفي: أرض وتحليل على ضوء الكتاب والسنة.409-433]