Brahma Rakshasa is found at least in the following sources:
Padma Purana, chapter 5.7, where Ravana is said to be of a Brahma-Rakshasa class:
[...] O great king, you yourself are that great god Viṣṇu, who destroys the misery of gods, and who has taken up a (human) form. O highly intelligent one, this Bharata, Lakṣmaṇa and Śatrughna are (born) from your ...
In the Srimad Valmiki Ramayana, there are two Rakshasas by the name of Trishiras, one being the commander-in-chief of Khara’s army and the other being Ravana’s son. Both are explained below:-
1. Trishiras, a chief in Khara’s army
This Trishira is introduced in the 23rd Sarga of the Aranyakanda, while describing the army of Khara that proceeds towards Rama, ...
I don't have enough reputation to comment but Ravana, in particular, was well-versed in the six shastras and the four Vedas. He is even known to be an excellent veena player. Therefore, we know that he was also trained in the arts.
Prasad, B. A. "The Character of Ravana and Rama from the Buddhist Perspectives of the Ten Worlds." Language ...
As specified in the link Rakshasendra, consist of two words, Rakshas and Indra.
As per my understanding, when the term Indra is used with other terms, it signifies that for whomever the term is used for, he/she/it is superior to others of its kind or is like a king of its kind.
Devendra is Indra within devas or king of Devas,
Narendra is Indra ...
Yes, Vibhīṣaṇa also killed some rākṣasas during the battle between Lakṣmaṇa and Indrajit. Bow & arrow seems to have been his chief weapon.
Seeing Lakshmana and Indrajit, fighting with commitment to gain
victory one over the other, like elephants in rut, that strong and
valiant Vibhishana, wielding his excellent bow, stood there at the