HIdimba Devi the Rakshasi who married Bhima
When the Kauravas lead by Duryodhana try to burn the Pandavas along with their mother Kunthi(The aunt of Lord Krishna) , they escaped and wandered all over the forests of their kingdom. Once they approached a place in the forest without knowing the Existence of a Rakshasa called Hidimba and his sister HIdimbi (Hidimba devi) . Hidimba who was a man eater wanted to eat Bhima and when he saw that Bhima was Standing guard to the other Pandavas and his mother , He compelled his sister to assume the form of a pretty women and sends her to attract Bhima and bring him before him so that he could eat him. But Bhima declined the advances of Hidimbi and infuriated Hidimba attacks Bhima and is killed by him. Since Hidimbi , fell in love with BHima and had taken an oath to marry any one who defeats her brother Hidimba ., She begged Kunthi to allow her to marry BHima. Kunthi agreed to that provided that Bhima will leave her once she becomes a mother of BHima’s child. She was told that she could carry BHima and wander all over during day time and return him to the pandavas when night sets in. Hidimbi(Hidimba Devi ) married BHima agreeing to the condition. Within a year a son was born to her and Kunthi named him as Ghatothkacja( One with head like pot). The pandavas then leave from there and after killing Bhakasura reach the Kingdom of Panchala and all of them married Draupadhi, the Panchala princess . Afterwards when the Pandavas get established in their own capital city of Inbdraprastha , they decided to do a fire sacrifice called Rajasuya , But since Yudhishtra was at that time without a son , the fire did not get lit in the fire place and since Bhima had a son, Sage Vyasa prayed Gods that all Pandavas were essentially one and Ghatothkacha was their son and conducted the fire sacrifice . Ghatothkacha later helps the Pandavas in the Mahabharatha war and is killed in the battle. Hidimbi then goes back to the forest and is made a Goddess of the forest people there .
HIdimbi is worshipped in her temple in Manali of Himachal Pradesh . Near to her temple there is a temple to her son GHatothkacha in the form of a tree and there is a temple dedicated to his son also in Manali , There are also other small temples dedicated to Hidimba Devi all over Himachalas .During the Dasara festival the HIdimba chariot escorts The Chariot of Raghunath on the Lanka Dahan day .People believe that Dimapur of Assam is named after Hidimba and is the corruption of the nama Hidimbapur.