Exhibit 23.1
Independent Registered Public Accounting Firm’s Consent
We consent to the inclusion in this Registration Statement of Spectre Acquisition Corp. on the Amendment No.1 to Form S-1(File No. 333-292193) of our report dated December 17, 2025, relating to the financial statements of Spectre Acquisition Corp. as of November 20, 2025 and for the period from November 5, 2025 (inception) through November 20, 2025 appearing in the Prospectus, which is part of this Registration Statement. We also consent to the reference to our firm under the heading “Experts” in such Prospectus.
Guangdong Prouden CPAs GP
Guangzhou, China
March