| cut_from_names = true| image = MegalithPhalegMegalithPortal-IGAS-JP-OP.png| caption = "[[Megalith PhalegOphiel|Ophiel]]", "[[Megalith Och|Och]]", and "[[Megalith Hagith|Hagith]]" in the artwork of "[[Megalith Portal]]".
| ja_name = メガリス
| romaji = Megarisu
| trans = Medallion
| sets =| tcg =| ocg =* [[Ignition Assault]]
}}
'''"Megalith"''' is an [[archetype]] of [[EARTH]] [[Rock]] [[Ritual Monster]]s which debuts in ''[[Ignition Assault]] (IGAS). They are based on Olympian spirits''.
==Design==
The monster names of this archetype are taken directly from the [[wikipedia:Olympian spirits|Olympian spirits]], which are seven spiritual entities mentioned in Renaissance and post-Renaissance works such as ''[[wikipedia:Arbatel de magia veterum|Arbatel de magia veterum]]'', ''[[wikipedia:The Secret Grimoire of Turiel|The Secret Grimoire of Turiel]]'' and ''The Complete Book of Magic Science''.