Joint radio-infrared view of Alcyoneus, a radio galaxy with a projected proper length of 5.0 Mpc. We show a 2048″  ×  2048″ solid angle centred around right ascension 123.590372° and declination 52.402795°. We superimpose LoTSS DR2 images at 144 MHz of two different resolutions (6″ for the core and jets, and 60″ for the lobes) (orange), with the WISE image at 3.4 μm (blue). To highlight the radio emission, the infrared emission has been blurred to 0.5′ resolution.