A human gos to equestria after nightmare moon has been banished he has three forms (first appeared) (500 years later) (1000 years or first episode)

(First appeared) he is 20ft tall and looks like the normal siren head

(500 years later) he just looks like this https://pbs.twimg.com/media/DozIvWqV4AEQeNY.jpg but has 2 extra sirens and arms

(1000 years later or first episode) he look like the 500 year form but he is 100ft tall has 2 more extra arms (6 in total) has a mass of 10-15 speakers (why not)

More info look hear https://trevor-henderson-inspiration.fandom.com/wiki/The_Siren_Head

For what sounds he makes along with speaking

https://m.youtube.com/playlist?list=PLlLPBdm7acg_gBLGObozmKp0VFnk4bE13

Sounds neat if someone actually wrote it. Assuming he wasn’t just mindless murder kill.