You can get the required result using following query:
select
concat('T-',timeline.TimelineId), timeline.UsuarioId, timeline.TimelineFecha, "" Timeline, timeline.Evento, timeline.JuegoId, 0 TimelinePadre
from
timeline
union
select
concat('TP-',timeline_personal.TimelineId), timeline_personal.UsuarioId, timeline_personal.TimelineFecha, timeline_personal.Timeline, "0" Evento, "0" JuegoId, timeline_personal.TimelinePadre
from
timeline_personal
order by UsuarioId