We present a multifrequency analysis of the radio galaxy 3CR 196.1 (z= 0.198), associated with the brightest galaxy of the cool-core cluster CIZAJ0815. 4-0303. This nearby radio galaxy shows a hybrid radio morphology and an X-ray cavity, all signatures of a turbulent past activity, potentially due to merger events and active galactic nuclei (AGN) outbursts. We present results of the comparison between Chandra and Very Large Telescope Multi-Unit Spectroscopic Explorer data for the inner region of the galaxy cluster, on a scale of tens of kpc. We discovered Hα+[N ii] λ6584 emission spatially associated with the X-ray cavity (at∼ 10 kpc from the galaxy nucleus) instead of with its rim. This result differs from previous discoveries of ionized gas surrounding X-ray cavities in other radio galaxies harbored in galaxy clusters and could represent the first reported case of ionized gas filling an X-ray cavity, either due to different AGN outbursts or to the cooling of warm (10 4< T≤ 10 7 K) AGN outflows. We also found that the Hα,[N ii] λλ6548, 6584, and [S ii] λλ6718, 6733 emission lines show an additional redward component, at∼ 1000 km s− 1 from rest frame, with no detection in Hβ or [O iii] λλ4960, 5008. We believe the most likely explanation for this redward component is the presence of a background gas cloud as there appears to be a discrete difference of velocities between this component and the rest frame.