This is said to be the final film for the lead actor, Udayanidhi Stalin.
Mamannan means "Great king", or "Big king", or "Emperor". "Mann" means mud/dirt and this was the name the titular character was called by others when he had grown up. This is according to naming conventions in Manusmiriti that says the lowest castes need to be called with detestable names, so as to be kept in submissive stance throughout life.
This is the first prominent non-comedy role for actor Vadivelu.
When Maamanan (Vadivelu) dreams of a child being hanged as he sits in his house near a young, wounded Athiveeran (Udayanidhi Stalin), it may symbolise that Maamannan has sacrificed his innocence for the sake of his political career.
The name "Ondiveeran" in the song references an Arunthathiyar freedom fighter. Madurai veeran also is from the same oppressed community, who was an army commander of Nayaks/chieftains and later assassinated by Madurai Nayak for being loved by the lord's love interest.