Archangels are seraphs according to mythology, but not all seraphs are archangels.
No, Satan is traditionally depicted as a fallen angel or a demon in Christian theology, specifically as a cherub or archangel rather than a Seraphim. Seraphim are a different rank of angels, described in the Bible's Book of Isaiah as having six wings and serving as attendants to God.
St. Michael is often identified as an archangel rather than a seraphim in Christian tradition. While seraphim are described in the Bible as a class of celestial beings closest to God, St. Michael serves as a protector and leader of the heavenly armies. His role primarily focuses on spiritual warfare and advocacy for God's people, distinguishing him from the seraphim's specific function in worship and praise.
St. Michael was created an Archangel and Seraphim when God decided to share the glory of his beatific vision when he created the angelic orders as pure spirit to know, love, and serve him, and sing his perpetual hymns of praise in Heaven.
Host. A host of angels / cherubim. The word "host" can apply for any level or rank of angel, be it angel, archangel, seraphim or cherubim.
Seraphim is the plural and the seraph is the singular
Seraphim Call was created in 1999.
Seraphim - band - was created in 2001.
Seraphim Digital was created in 2006.
Gonerilia seraphim was created in 1886.
As strange as it may sound, the Bible is fairly silent on 'hierarchy' of angels though it mentions 'Seraphim' surrounding God's Throne and Michael, the chief prince of the sons of Man, also the only one called an 'archangel.' This is primarily a man-made concept so see link below:
No. Seraphim are in Heaven attending the throne of God.
The duration of Seraphim Falls is 1.92 hours.