Dubnium was an element with an atomic number of 105.

In 1968, Señor 105 styled himself after the recently discovered element, then known as hahnium or eka-tantalum. Iris Wildthyme knew it would be named dubnium in 30 years. (PROSE: Iris Wildthyme y Señor Cientocinco contra Los Monstruos del Fiesta)

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