- This card is the retrained counterpart of "Celtic Guardian".
- The "Obnoxious" in this card's name may refer to its ability to survive attacks from powerful monsters.
- This card appears in the artwork of "Brave Attack".
- Some French version of this card were misprinted "Guardien Celtique Recyclé" instead of "Gardien Celtique Recyclé", due to the fact that the English equivalent of "Gardien" is "Guard" or "Guardian".
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