Bionis

The Bionis (, lit. "giant deity") is one of the two Titans of Xenoblade Chronicles. It is home to Homs, Nopon, High Entia and many other species.

Story
Long ago prior to the events of the game, the Bionis fought a vicious battle against its mechanical counterpart, Mechonis, chopping off its left arm in the process, before both titans would gravely wound one another and enter a dormant state.

While most from Bionis were taught that the Great Battle was only between the titans themselves, the Data Centre in Agniratha reveals that countless Telethia were sent to devour life on Mechonis, and nearly succeeded.

Several thousand years later, the Bionis would awaken once again, after Zanza re-emerged from Shulk's body in Mechonis Core. With little effort, the Bionis would conjure its Monado once again. A single stroke of the blade would suffice both to break Sword Valley in half, and slice the Mechonis' core in half with extreme precision. Fiora and Meyneth would briefly stop the Bionis' assault by confronting Zanza directly, but Zanza easily claimed victory, killing Meyneth and taking her Monado for himself. Zanza would then transport himself to Prison Island, and would sink it into the Bionis' head, causing an extreme spike in atmospheric ether levels on the titan's upper regions, transforming every pure-blooded High Entia on the upper Bionis into Telethia. Only those with mixed heritage or far enough away from Eryth Sea were spared from this.

With the destiny Zanza laid out for the High Entia fulfilled, the Bionis would attempt to annihilate Shulk and company aboard Junks, only for the Mechonis to shield the vessel under Egil's direction. However, the Bionis proved strong enough to break off the Mechonis' other arm barehandedly. Monado in hand, the Bionis would bring its sword down for the final time, killing Egil and leaving the Mechonis in ruins.

The final attack from Egil proved invaluable, however, as it provided an entryway into the Bionis' Interior after Shulk had recovered from his brush with death. This allowed them all a direct path both to Prison Island, and the Memory Space Zanza had retreated to. After Zanza's death, and Shulk's decision to reject godhood, the Bionis would collapse, partly sticking out of the ocean. Colony 9 would remain on the shore of the sea near the Bionis' head, with other locations unseen but presumably intact to varying degrees. The Bionis' left shoulder would remain suspended in the air, thanks to the shoulder's high geological content of Hover Stone.

The head of the Bionis can be seen as part of Erythia Sea on Aionios.

Areas on the Bionis

 * Tephra Cave
 * Bionis' Leg
 * Colony 6
 * Ether Mine
 * Satorl Marsh
 * Bionis' Interior
 * Makna Forest
 * Frontier Village
 * Eryth Sea
 * Alcamoth
 * High Entia Tomb
 * Prison Island
 * Valak Mountain
 * Valak Mountain

Bionis