Fearless Feigenbaum: Uninvited but Unrelentingly Attentive

Mathematician extraordinaire, renowned for his ability to attend every meeting he's not invited to, and his uncanny talent for turning even the most esoteric equations into a thrilling spectacle.

Lectures - Where the uninvited master shares his expertise on "The Art of Unwelcome Attendance" and "Advanced Calculus for the Uninitiated."
Manifestos - A collection of Feigenbaum's most revered treatises on the importance of showing up uninvited.
Taunting - A series of scathing critiques on the art of politely declining an invitation.

A picture of Fearless Feigenbaum looking rather pleased with himself, despite being uninvited to the meeting

"I'll just drop by, don't mind if I'm not on the list, I'm sure my presence will be a welcome surprise..." - Fearless Feigenbaum