Although Gehirn is consistently spelled using all-capital letters, it is not an acronym. Many times during the series English words are spelled in all-capital letters as a stylistic choice by the Japanese production team, including words that are obviously not acronyms such as "ADAM" or "SECOND IMPACT". This has unintentionally led to some confusion when words such as "NERV", "SEELE", and "Magi" are spelled with all-capitals, leading to the incorrect assumption that they are acronyms, also referral to the pyramid and inverted pyramid shaped building called Gehirn.