Playable Gears:
Weltall - ヴェルトール - VERUTO-RU - Weltall
Weltall-2 - ヴェルトール2 - VERUTO-RU 2 - Weltall 2
Weltall is German for "outer space."
Xenogears - ゼノギアス - ZENOGIASU - Xenogears
Amusing little fact: I once met someone who thought that "Xenogears" referred to all of the mecha in this game, rather than just one, probably because the name is plural.
Vierge - ヴィエルジェ - VIERUJE - Vierge
Vierge is French for "virgin," and also used to refer to the constellation and Zodiac sign Virgo. Its name meaning is kind of interesting, seeing as Elly is never seen using it after a certain scene with her and Fei... ;-)
El Regurus - E・レグルス - E • REGURUSU - El Regulus
Regulus is the brightest star in the constellation Leo. This Gear isn't actually playable without a GameShark code, but it was more convenient to put it with the playable Gears since it's piloted by a playable character.
In all Omnigear names, the Roman letter "E" is read as "ERU," or "
El."
Heimdal - ヘイムダル - HEIMUDARU -
Heimdallr El Fenrir - E・フェンリル - E • FENRIRU - El
Fenrir Brigandier - ブリガンディア - BURIGANDIA - Brigandier
Most likely a combination of "brigand" and "brigadier."
El Andvari - E・アンドヴァリ - E • ANDOVARI - El
Andvari Yggdrasil IV - ユグドラシルIV世 - YUGUDORASHIRU IV sei - Yggdrasil IV
Named after the World Tree from Norse mythology.
Stier - シューティア - SHU-TIA - Stier
El Stier - E・シューティア - E • SHU-TIA - El Stier
Stier is German for "bull," and also used to refer to the constellation and Zodiac sign Taurus.
Renmazuo - レンマーツォ - RENMA-TSO - Rénmǎzuò
El Renmazuo - E・レンマーツォ - E • RENMA-TSO - El Rénmǎzuò
Rénmǎzuò (人马座) is the Chinese name for the constellation and Zodiac sign Sagittarius.
Seibzehn - ゼプツェン - ZEPUTSEN - Siebzehn
Siebzehn is German for "seventeen," hence its frames being designated "#17-XXXXX."
Crescens - クレスケンス - KURESUKENSU - Crescens
Could be named after the Latin word for "crescent" or a
somewhat-obscure Christian saint.
Deurmod - ディルムッド - DIARUMUDDO - Diarmuid
The generic Gears used by Bart's soldiers in two event battles. Also called "BARTHOS" internally.
Possibly named after the mythical Celtic hero
Diarmuid Ua Duibhne.
Other unique Gears:
Calamity - カラミティ - KARAMITI - Calamity
Does anyone else wonder why this wasn't called "Sechzehn" to match with its counterparts?
Swordknight - ソードナイト - SO-DONAITO - Sword Knight
Aegisknight - シールドナイト - SHI-RUDONAITO - Shield Knight
Wandknight - ワンドナイト - WANDONAITO - Wand Knight
Clawknight - カップナイト - KAPPUNAITO - Cup Knight
The four Gears above are references to the suits of the Tarot, but with the suit of Pentacles replaced with Shields.
Dora - ドーラ - DO-RA -
Dora Haishao - ハイシャオ - HAISHAO - Hǎishāo
Hǎishāo ( 海烧) is Chinese for "burning sea."
Bladegash - ブレードガッシュ - BURE-DOGASSHU - Bladegash
Alkanshel - アルカンシェル - ARUKANSHERU - Arc-en-Ciel
Contrary to popular belief, it's not "Archangel," which would be "アークエンジェル" in katakana. Arc-en-Ciel is アルカンシエル, which isn't quite identical to this Gear's name, either, but It's still closer to that than to "archangel." It could also be a pun on "shell," since its main armament is defensive in nature.
Buntline - バントライン - BANTORAIN -
Buntline Wyvern - ワイバーン - WAIBA-N - Wyvern
Achtzehn - アハツェン - AHATSEN - Achtzehn
Achtzehn is German for "eighteen."
Marinebasher - マリンバッシャー - MARINBASSHA- - Marinebasher
Skyghene - スカイギーン - SUKAIGI-N - Skygeen
Grandgrowl - グランガオン - GURANGAON - Grangaon
"Gaon" in the Japanese name is likely derived from gao (ガオー), the Japanese onomatopoeia for a lion's roar.
Vendetta - ヴェンデッタ - VENDETTA - Vendetta
Alpha Weltall - ORヴェルトール - OR VERUTO-RU - OR Weltall
OR is short for "original."
Amphysvena - アンフィスバエナ - ANFISUBAENA -
Amphisbaena Opiomorph - オピオモルプス - OPIOMORUPUSU - Ophiomorphus
"Ophiomorphus" literally means "serpent form," appropriately enough, given this Gear's appearance.
G Elements - Gエレメンツ - G EREMENTSU - G Elements
True Weltall - 真ヴェルトール - shin VERUTO-RU - True Weltall
Only appearing in the Battling Arena:
Ganador - ガナドール - GANADO-RU - Ganador
Spanish for "winner."
Titan - タイタン - TAITAN - Titan
Wind Shaver - W・シェイバー - W • SHEIBA- - W Shaver
Fire Wheel - ファイアホイール - FAIAHOI-RU - Fire Wheel
Silver Star - シルバースター - SHIRUBA-SUTA- - Silver Star
According to the Xenogears character page on the Japanese Wikipedia, this Gear is apparently piloted by Latina, the D-Block bartender. Just an interesting little tidbit I thought I'd mention.
Worker - ワーカー - WA-KA- - Worker
Dozer - ドーザー - DO-ZA- - Dozer
Twin Burner - ツインバーナー - TSUINBA-NA- - Twin Burner
Argento - アルジェント - ARUJENTO - Argento
Named mass-produced Gears will be listed with the rest of the monsters.