Use
/summon minecraft:panda ~ ~ ~ {MainGene:"lazy",HiddenGene:"lazy",Passengers:[{id:"minecraft:piglin",HandItems:[{id:"minecraft:golden_sword",Count:1}]}]}
to summon a Piglin riding on the lazy Panda. But immidately Piglin get off.
MC-172940
Piglins can't ride
Resolved
Duplicate
0
ZYX_2D
(Unassigned)
Unconfirmed
(Unassigned)
20w08a
Retrieved
Piglins not riding anything was considered to be intentional; see MC-172255.