If it turns out Morrison isn't appearing as Rex in "Obi-Wan Kenobi," it's possible he could still return as another popular clone trooper named Echo, who was a member of the 501st legion before he joined a group of clones called the Bad Batch. Echo's defining physical characteristics include his cybernetic right arm and ears. The mystery silhouette in the "Kenobi" trailer, which fans believe belongs to Morrison, appears to have cybernetic implants on the back of his head, and while they're different than Echo's, the similarities are enough to suggest the clone could appear in the series.
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