I found some flags here, by Beyond-Mogai-Pride-Flags, but there's no names or (official) definitions, so here we are >:D

SW: Bold

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Axenospike

A genderspike identity in which one is normally agender, but occasionally experiences a spike of a xenogender(s).

Afemspike

A genderspike identity in which one is normally agender, but occasionally experiences a spike of a female/feminine/fiaspec gender(s).

Amascspike

A genderspike identity in which one is normally agender, but occasionally experiences a spike of a male/masculine/miaspec gender(s).

Femaspike

A genderspike identity in which one is normally a female/feminine/fiaspec gender(s), but occasionally experiences a spike of agender.

Femxenospike

A genderspike identity in which one is normally a female/feminine/fiaspec gender(s), but occasionally experiences a spike of a xenogender(s).

Femmascspike

A genderspike identity in which one is normally a female/feminine/fiaspec gender(s), but occasionally experiences a spike of a male/masculine/miaspec gender(s).

Mascaspike

A genderspike identity in which one is normally a male/masculine/miaspec gender(s), but occasionally experiences a spike of agender.

Mascfemspike

A genderspike identity in which one is normally a male/masculine/miaspec gender(s), but occasionally experiences a spike of a female/feminine/fiaspec gender(s).

Mascxenospike

A genderspike identity in which one is normally a male/masculine/miaspec gender(s), but occasionally experiences a spike of a xenogender(s).

Xenoaspike

A genderspike identity in which one is normally a xenogender(s), but occasionally experiences a spike of agender.

Xenofemspike

A genderspike identity in which one is normally a xenogender(s), but occasionally experiences a spike of a female/feminine/fiaspec gender(s).

Xenomascspike

A genderspike identity in which one is normally a xenogender(s), but occasionally experiences a spike of a male/masculine/miaspec gender(s).

All of the "a"s that represent agender are pronounced with the long "a" sound, like in "agender." Example: Xenoaspike is "xeno-ae-spike"