is he a follower of lord shiva?
Yes
Ravana
According to scriptures, Ravana once tried to lift Mount Kailash, but Shiva pushed the mountain into place and trapped Ravana beneath it. For a thousand years, the imprisoned Ravana sang hymns (Shiva Tandava Stotra) in praise of Shiva, who finally blessed him and granted him an invincible sword and a powerful linga (Shiva's an iconic symbol, Atmalinga) to worship.
what is the relation between kuber and ravan in mythology Kubera is described as the uncle of Ravana in the "Mahabharata". what is this former one worshipped for? He is worshipped as the god of wealth. what significance it has in other religion? In Jainism, he is the attendant Yaksha of the 19th Tirthankar Mallinath. is he a good deity according to the puranas? Yes, as The "Purana"s grant him unquestioned godhood. who is the above mentioned latter god? A king of Lanka and the chief antagonist in the Hindu epic "Ramayana" and its adaptations. where was he born? There are several beliefs, but the people of Bisrakh village in Uttar Pradesh claim that Bisrakh was named after Vishrava, and that Ravana was born there.
wiki:8279893
Ravana [SEP] Devotee of Shiva
One of the most Popular Images of Shiva is called as "Ravananugraha" which was popular in Gupta era which depicts Ravan beneath Mount Kailasa Playing the Veena Made out of his head and hand and strings made out of his Tendons with Shiva Parvati sitting on top. According to scriptures, Ravana once tried to lift Mount Kailash, but Shiva pushed the mountain into place and trapped Ravana beneath it. For a thousand years, the imprisoned Ravana sang hymns (Shiva Tandava Stotra) in praise of Shiva, who finally blessed him and granted him an invincible sword and a powerful linga (Shiva's an iconic symbol, Atmalinga) to worship.