|voiced by = Cory Doran (ENG)<br/>Junichi Yanagita (JP)
}}
{{Nihongo|'''Nillious'''|ニリアス|Niriasu}} is a multiple-headed hydra/dragon-like [[Bakugan]] that appears in ''[[Bakugan Battle Planet]]''. This deadly and powerful Bakugan is owned by [[Magnus Black]] and is a rival to [[Drago (Dan Kouzo)|Dragonoid]]. He initially appeared as a two-headed hydra/dragon with mechanical wings until his alteration in ''[[Bakugan: Armored Alliance|Armored Alliance]]'' in which he appeared more organic with real dragon wings. In both ''[[Bakugan: Geogan Rising|Geogan Rising]]'' and ''[[Bakugan: Evolutions|Evolutions]]'', he underwent training with Magnus and evolved into a three-headed hydra/dragon/centaur, then into an Elemental Bakugan with both his Strength and Speed Modes, before changing to a form similar to his ''Armored Alliance'' form in ''[[Bakugan: Legends]]''.
==Information=====Bakugan.com===The double headed {{Nihongo|'''Nillious main motive in brawls '''|ニリアス|Niriasu}} is to kill a multiple- not to win. He does not headed hydra/dragon like fighting as a team with his partner[[Bakugan]] from the reboot series, Nillious is out satisfy only himself. He likes to go rogue. Each head has own personality and ability. Untamable and vicious Magnus has his hands full keeping Nillious debuting in line.<ref>''[https://web.archive.org/web/20220127211045/https://bakugan.com/en/bakulog Nillious[Bakugan Battle Planet]]'' BakuLog entry]</ref>
==Anime=====''A [[Bakugan Battle Planet]]''===Nillious joins (Magnus in his attempt to turn the [[Awesome Ones]]' new Bakugan against them, a [[Darkus#RebootBlack)|Darkusone]] Bakugan named [[Artulean]]. After Magnus' plan works and he reveals his disguiseappears in the TV-Show, being the only-one-of-its-kind at the moment, Nillious brawls [[Lightning]] and owned by [[Howlkor UltraMagnus Black]], but after as well as being the rest main rival of the Awesome Ones return, Magnus flees riding on Nillious.<ref>''[[Dog DazeDrago (Dan Kouzo)|Dragonoid]]''</ref>.
==Description=''[[====in Bakugan: Armored Alliance]]''.com===The double headed Nillious main motive in brawls is to kill - not to win. He does not like fighting as a team with his partner, Nillious is out satisfy only himself. He likes to go rogue. Each head has own personality and ability. Untamable and vicious Magnus has his hands full keeping Nillious in line.<ref>[https://web.archive.org/web/20220127211045/https://bakugan.com/en/bakulog Nillious' BakuLog entry]</ref>
===Appearance===In ''Battle Planet'' it appears as a two-headed hydra/dragon with mechanical wings. Later on ''[[Armored Alliance]]'' has a more organic aspect, with natural dragon wings instead of mechanical ones.<br/>In ''[[Bakugan: Geogan Rising]]''===becames a three-headed hydra/dragon/centaur; and then, into an Elemental Bakugan on ''[[Evolutions]]''
===''[[Bakugan: Evolutions]]''=Anime== ===''[[Bakugan: Legends]]''Major Appearances=== ===''[[Small Brawl Stories]]''==={{Non-Canon}}In ''[[Tin Pan Alley]]'', while Drago is practicing his abilities on paper targets, [[Nillious]] hides behind one of the targets and surprises Drago by attacking with [[Shadow Breath]] and [[Darkus Blast]]. To expose Nillious, Drago uses [[Back Draft]] to incinerate the target.<ref>''[[Tin Pan Alley]]''</ref>In ''[[Teamwork Makes the Dream Work]]'', Nillious attempts to taunt [[Dragonoid (RebootMagnus Black)|Drago]] into a brawl as Drago, [[Cyndeous]], and [[Gorthion]] watch up. Instead of listening to Drago's advice and staying hidden, Gorthion steps out and uses [[Drum Wave]], but Nillious uses [[Reflection]] and sends the wave back at Gorthion, incapacitating him. After the failed attempt by Gorthion, Cyndeous steps in and uses [[Volcanic Lance]] against Nillious, but misses and is taken out by [[Shadow Breath]]. Drago then appears, and uses [[Guard Sphere]] to trap Nillious in a bubble, leaving him unable to attack further.<ref>''[[Teamwork Makes the Dream Work]]''</ref>{{-}}==Evolutions=====''Battle Planet''===<tabber>Hyper Nova Mode={{BBP Bakugan Infoboxmain|name = Hyper Nillious Nova Mode|image = [[File:BBP-Hyper Nillious Nova Mode anime.png|250px]]|attribute = Darkus|power = 800|variations = {{NilliousVariantList(Magnus Black)}}|first = [[Mask of Power]]}}{{Nihongo|'''Hyper Nillious Nova Mode'''|ハイパーニリアス・ノヴァモード|Haipā Niriasu Novua Mōdo}} He is the attack mode of Hyper only Nillious in ''[[Bakugan Battle Planet]]''.|-|Hyper Shadow Mode={{BBP Bakugan Infobox|name = Hyper Nillious Shadow Mode|image = [[File:BBP-Hyper Nillious Shadow Mode anime.png|250px]]|attribute = Darkus|power = 800|variations = {{NilliousVariantList}}|first = [[Mask of Power]]}}{{Nihongo|'''Hyper Nillious Shadow Mode'''|ハイパーニリアス・シャドーモード|Haipā Niriasu Shadō Mōdo}} is species that appears on the defense mode of Hyper Nillious in ''[[Bakugan Battle Planet]]''.|-|Titan Nova={{BBP Bakugan Infobox|name = Titan Nillious Nova|image = [[File:BBP-Ultima Nillious Nova anime.png|250px]]|attribute = Darkus|power = 1000|variations = {{NilliousVariantList}}|first = [[The Mask of Pride]]}}'''Titan Nillious Nova''', {{Nihongo|'''Ultima Nillious Nova'''|アルティマニリアスノヴァ|Arutima Niriasu Novua}} in show; and its the Japanese version, is the second evolved form of Nillious that splits into its own entity in ''[[Partner Bakugan Battle Planet]]''.|-|Titan Shadow={{BBP Bakugan Infobox|name = Titan Nillious Shadow|image = [[File:BBP-Ultima Nillious Shadow anime.png|250px]]|attribute = Darkus|power = 1000|variations = {{NilliousVariantList}}|first = [[The Mask of Pride]]}}'''Titan Nillious Shadow''', {{Nihongo|'''Ultima Nillious Shadow'''|アルティマニリアスシャドー|Arutima Niriasu Shadō}} in the Japanese version, is the second evolved form of Nillious that splits into its own entity in ''[[Bakugan Battle Planet]]''.</tabber>{{-}}===''Evolutions''===<tabber>Strength Mode={{BBP Main Bakugan Infobox|name = Nillious Strength Mode|image = [[File:BEV-Nillious Strength Mode anime.png|250px]]|attribute = Darkus|power = 800|variations = {{NilliousVariantList}}|first = [[Magnus is Back!]]}}{{Nihongo|'''Nillious Strength Mode'''|ニリアス ストレングモード|Niriasu Sutorengu Mōdo}} is the first Elemental Evolved Form of Nillious in ''Bakugan: Evolutions''. He is represented in the anime as '''Platinum Nillious''' during the Ball form roll out sequence.|-|Speed Mode={{BBP Bakugan Infobox|name = Nillious Speed Mode|image = [[File:BEV-Nillious Speed Mode anime.png|250px]]|attribute = Darkus|power = 800|variations = {{NilliousVariantList}}|first = [[Magnus is Back!]]}}{{Nihongo|'''Nillious Speed Mode'''|ニリアス スピードモード|Niriasu Supīdo Mōdo}} is Black thoughout the second Elemental Evolved Form majority of Nillious in ''Bakugan: Evolutions''. He is represented in the Physical Game as '''[[Genesis Nillious]]''' during the Ball form roll out sequenceseries.</tabber>{{-}}