Destruction duo Headcanons + Wemmbu Species Headcanons
I like to think the reason Mane was compelled to help Wemmbu during the Zam Empire and also during his training is because since Mane is a lion hybrid, and Wemmbu is a Chimera Hybrid (double hybrids lol), he felt an urge to care for them as his instincts considered them part of the 'Pride' as Chimeras have dormant genes that they can activate when wanted.
Most Chimera Hybrids(more like all) are able to shapeshift their hybrid traits to fit whatever they want. Almost every type of hybrid gene is dormant until activated. Personally I like to think that in order to change genes/visible traits, they have to go into a rest state similar to a coma, but they still are mostly aware of their surroundings, just can't do anything. That's why Wemmbu during the Invis Arc didn't just change his traits, and also cause changing traits doesn't change the player's nametag.
Back to Destruction Duo, Mane felt a kind of responsibility for Wemmbu as Flame is just a Blaze Tiger Hybrid, but was adopted into the 'Pride' while Wemmbu has actual Lion Genes (atleast thats what Mane's instincts sense.) So he chose to help Wemmbu, but the reason he didn't want to help Wemmbu train at first is cause he didn't want him getting into something he wasn't ready for, since Wemmbu was younger than Mane so he saw him as a 'cub' or 'young' member of the Pride.
More headcanons coming soon, since I finally finished my Year 3 College exams!
