I vaguely remember the following:
A purple polygonal head that accompanied print ads for Battle Arena Toshinden. I think this mascot was called Enos.
The caption "URNOTe." Since the letter "e" was distinguished by the colour red, the caption was supposed to suggest that 'you're not ready.'
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Was Enos actually featured in any games, or was he/she/it limited to SCEA's print ads? How long did SCEA stick with Enos?